Doc Code: TRACK1.REQ
`Document Description: TrackOne Request
`
`PTO/SB/424 (12-11)
`
`CERTIFICATION AND REQUEST FOR PRIORITIZED EXAMINATION
`UNDER 37 CFR 1.102(e) (Page 1 of 1)
`
`First Named
`Inventor:
`Title of
`Invention:
`
`Hiroshi T AKAHARA et al.
`
`Nonprovisional Application Number (if
`known):
`
`EL DISPLAY APPARATUS
`
`APPLICANT HEREBY CERTIFIES THE FOLLOWING AND REQUESTS PRIORITIZED EXAMINATION FOR
`THE ABOVE-IDENTIFIED APPLICATION.
`
`1. The processing fee set forth in 37 CFR 1.17(i), the prioritized examination fee set forth in 37
`CFR 1.17(c), and if not already paid, the publication fee set forth in 37 CFR 1.18(d) have been
`filed with the request. The basic filing fee, search fee, examination fee, and any required
`excess claims and application size fees are filed with the request or have been already been
`paid.
`
`2. The application contains or is amended to contain no more than four independent claims and
`no more than thirty total claims, and no multiple dependent claims.
`
`3. The applicable box is checked below:
`
`I.
`
`0 Original Application (Track One) - Prioritized Examination under§ 1.102(e)(1)
`
`i.
`
`(a) The application is an original nonprovisional utility application filed under 35 U.S.C. 111 (a).
`This certification and request is being filed with the utility application via EFS-Web.
`---OR---
`(b) The application is an original nonprovisional plant application filed under 35 U.S.C. 111 (a).
`This certification and request is being filed with the plant application in paper.
`
`ii. An executed oath or declaration under 37 CFR 1.63 is filed with the application.
`
`II. □ Request for Continued Examination • Prioritized Examination under§ 1.102(e)(2)
`
`i. A request for continued examination has been filed with, or prior to, this form.
`If the application is a utility application, this certification and request is being filed via EFS-Web.
`ii.
`iii. The application is an original nonprovisional utility application filed under 35 U.S.C. 111 (a), or is
`a national stage entry under 35 U.S.C. 371.
`iv. This certification and request is being filed prior to the mailing of a first Office action responsive
`to the request for continued examination.
`v. No prior request for co
`· ued examination has been granted prioritized examination status
`)
`under 37 CFR 1. 10
`
`Si nature
`
`Date
`
`Practitioner
`Re istration Number
`
`35 043
`
`'
`
`Note: Signatures of all the inventors or assignees of record of the entire interest or their representative(s) are required in accordance with
`37 CFR 1.33 and 11.18. Please see 37 CFR 1.4(d) for the form of the signature. If necessary, submit multiple forms for more than one
`si nature, see below*.
`
`[J 'Total of 1
`
`forms are submitted.
`
`SAMSUNG EX. 1002 - 1/388
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`

`

`Doc Code: ECOMM.AUTH/ECOMM.WTDW
`Doc Description: Internet Communications Authorized/Internet Communications Authorization Withdrawn
`
`PTO/SB/439 (11-15)
`
`AUTHORIZATION FOR INTERNET
`COMMUNICATIONS IN A PATENT
`APPLICATION OR REQUEST TO
`WITHDRAW AUTHORIZATION FOR
`INTERNET COMMUNICATIONS
`
`Application No.
`
`Filing Date
`
`First Named Inventor
`
`Art Unit
`
`Examiner Name
`
`Practitioner Docket No.
`
`Hiroshi TAKAHARA et al.
`ned
`ned
`
`To:
`
`Commissioner for Patents
`P.O. Box 1450
`Alexandria, VA 22313-1450
`
`I. To authorize permission for Internet Communications.
`[Z] Recognizing that Internet communications are not secure, I hereby authorize the USPTO to communicate
`with the undersigned and practitioners in accordance with 37 CFR 1.33 and 37 CFR 1.34 concerning any subject
`matter of this application via video conferencing, instant messaging, or electronic mail. I understand that a copy of
`these communications will be made of record in the application file. (MPEP 502.03)
`
`II. To withdraw authorization for Internet Communications.
`
`D The authorization given on - - - - - - - -~ to the USPTO to communicate with the undersigned and
`
`any practitioner in accordance with 37 CFR 1.33 and 37 CFR 1.34 concerning any subject matter of this application
`via Internet communications such as video conferencing, instant messaging, or electronic mail is hereby
`withdrawn. I understand that the withdrawal is effective when approved rather than when received.
`
`I am the
`
`D applicant.
`0
`D
`
`r 37 CFR 1.34. Registration number ____________ _
`
`2017-12-27
`
`Date
`
`Robert W. Mueller
`Typed or printed name
`
`7037161191
`Telephone Number
`
`NOTE: This form must be signed in accordance with 37 CFR 1.33. See 37 CFR 1.4 for signature requirements and certifications. Juristic entities
`must be represented by a patent practitioner (see 37 CFR 1.31, which is applicable to any paper filed on or after September 16, 2012, that is
`presented on behalf of a juristic entity, regardless of application filing date). Submit multiple forms if more than one signature is required, see
`below*.
`
`l{J * Total of_1_ forms are submitted.
`
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`

`

`P53938
`
`Page 1
`
`IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
`
`Inventor:
`Appl. No.:
`
`Hiroshi T AKAHARA et al.
`Not yet assigned (Continuation
`of U.S. Appl. No. 15/335,919)
`
`Group Art Unit:
`
`Examiner:
`
`Not yet assigned
`Not yet assigned
`
`Concurrently Herewith
`Filed:
`For: EL DISPLAY APPARATUS
`
`Confirmation No. : Not yet assigned
`
`AUTHORIZATION TO CHARGE DEPOSIT ACCOUNT
`
`Commissioner for Patents
`U.S. Patent and Trademark Office
`Customer Service Window, Mail Stop _ _ _ _
`Randolph Building
`401 Dulany Street
`Alexandria, VA 22314
`
`Sir:
`
`The undersigned hereby authorizes the U.S. Patent and Trademark Office to charge any
`
`fees necessary for filing and/or to maintain the pendency of the above-identified application,
`
`including any basic filing fees, application size fees, search fees, examination fees, processing
`
`fees, extension of time fees, and claim fees, to Deposit Account No.19-0089.
`
`Should the Examiner have any questions, the Examiner is invited to contact the
`
`undersigned at the below-listed telephone number.
`
`Respectfully submitted,
`Hiroshi TAKAHARA et al.
`
`/Robert W. Mueller/ Reg. No. 35,043
`Robert W. Mueller
`
`Bruce H. Bernstein
`Reg. No. 29027
`
`December 29, 2017
`GREENBLUM & BERNSTEIN, P.L.C.
`1950 Roland Clarke Place
`Reston, VA 20191
`(703) 716-1191
`
`{P53938 03347037 .doc}
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`

`

`P53938
`
`IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
`
`Page 1
`
`Inventor:
`
`Hiroshi T AKAHARA et al.
`
`Group Art Unit: Not yet assigned
`
`Appl. No.:
`
`Not yet assigned (Continuation of
`U.S. Application No. 15/335,919)
`
`Examiner: Not yet assigned
`
`Filed:
`
`Concurrently Herewith
`
`Confirmation No. Not yet assigned
`
`For:
`
`EL DISPLAY APPARATUS
`
`CLAIM OF PRIORITY
`
`Commissioner for Patents
`U.S. Patent and Trademark Office
`Customer Service Window, Mail Stop _ _ _ _
`Randolph Building
`401 Dulany Street
`Alexandria, VA 22314
`
`Sir:
`
`Applicants hereby claim the right of priority granted pursuant to 35 U.S.C. 119 based
`
`upon Japanese Application Nos. 2001-271311, filed September 7, 2001; 2001-291598, filed
`
`September 25, 2001; 2001-347014, filed November 13, 2001 and 2002-136117, filed May 10,
`
`2002. As required by 37 C.F.R. 1.55, a certified copy of the Japanese applications has been filed
`
`in grandparent Application No. 14/341,620, filed July 25, 2014.
`
`Respectfully submitted,
`Hiroshi TAKAHARA et al.
`
`/Robert W. Mueller/ Reg. No. 35,043
`Robert W. Mueller
`
`Bruce H. Bernstein
`Reg. No. 29027
`
`December 29, 2017
`GREENBLUM & BERNSTEIN, P.L.C.
`1950 Roland Clarke Place
`Reston, VA 20191
`(703) 716-1191
`
`{P53938 03347039.doc}
`
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`

`

`1
`
`DESCRIPTION
`
`EL DISPLAY APPARATUS
`
`Related Applications
`
`5
`
`This application is a Continuation of U.S. Patent Application Ser. No. 15/335,919, filed on
`
`October 27, 2016, which is Continuation of U.S. Patent Application Ser. No. 14/341,620, filed on
`
`July 25, 2014 and now U.S. Patent No. 9,728,130 issued on August 8, 2017, which is a Continuation
`
`of U.S. Patent Application Ser. No. 10/488,591, filed on September 17, 2004 and now U.S. Patent No.
`
`8,823,606 issued on September 2, 2014, which is a U.S. National Phase under 35 U.S.C. § 371 of
`
`10
`
`International Application No. PCT/JP2002/009111, filed on September 6, 2002, which in tum claims
`
`the benefit of Japanese Application Nos.: 2002-136117, filed on May 10, 2002; 2001-347014, filed
`
`on November 13, 2001; 2001-291598, filed on September 25, 2001; and 2001-271311, filed on
`
`September 7, 2001, the entire disclosures of which Applications are incorporated by reference herein.
`
`15
`
`Technical Field
`
`The present invention relates to an EL display apparatus employing an organic or inorganic
`
`electroluminescence (EL) device and, more particularly, to an EL display apparatus capable of
`
`feeding an EL device with a desired current, a method of driving the same, and an electronic
`
`apparatus provided with such an EL display apparatus.
`
`20
`
`Background Art
`
`In general, an active-matrix display apparatus has a multiplicity of pixels arranged in matrix
`
`and displays an image by controlling the intensity of light pixel by pixel in accordance with image
`
`signals given. When, for example, liquid crystal is used as an electro-optic substance, the
`
`25
`
`transmittance of each pixel varies in accordance with the voltage applied to the pixel. The basic
`
`operation
`
`{P53938 03345349.DOC}
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`2
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`an active-matrix image display apparatus employing an organic
`
`electroluminescence (EL) material as an electro-optic converting substance is the
`
`same as in the case where liquid crystal is used.
`
`A liquid crystal display panel has pixels each functioning as a
`
`5
`
`shutteT and displays an image by turning onfoff light from a back light with such
`
`a shutter, or a pixel. An organic EL display panel is a display panel of the self(cid:173)
`
`luminescence type having a light-emitting device in each pi.xel. Such a self(cid:173)
`
`luminescence type display panel has advantages over liquid crystal display panels,
`
`including higher image visibility, no need for a back light, and higher response
`
`10
`
`speed.
`
`The organic EL display panel controls the luminance of each light(cid:173)
`
`emitting device (pixel) based on the amount of cunent. Thus, the organic EL
`
`display panel is largely different from the liquid crystal display panel in that its
`
`luminescent devices are of the current-driven type or the cunent-controlled type.
`
`15
`
`Like the liquid crystal display panel, the organic EL display panel
`
`can have any one of a simple-matrix configuration and an active--matrix
`
`configuration. Though the former configuration is simple in structure, it has a
`
`difficulty in realizing a large-scale and high-definition display panel. However, it
`
`is inexpensive. The latter configuration can realize a lm-ge-scale and high-
`
`20
`
`definition display panel. However, it has problems of a technical difficulty in
`
`control and of a relatively high price. Presently, organic EL display panels of the
`
`active-matrix configuration are being developed intensively. Such an active(cid:173)
`
`matrix EL panel controls electric current passing through the light-emitting
`
`device provided in each pixel by means of a thin film transistor (!'FT) located
`
`25
`
`inside the pixel.
`
`An organic EL display panel of such an active-matrix configuration
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`is disclosed in Japanese Pa.tent Laid-Open Publication No. HEI 8··234683 for
`
`example. Fig. 62 shows an equivalent circuit of one pixel portion of this display
`
`panel. Pixel 216 comprises an EL device 215 as a light-emitting device, a first
`
`transistor 211a, a second transistor 211b, and a storage capacitor 219. Here, the
`
`5
`
`EL device 215 is an organic electroluminescence (EL) device.
`
`In the present description, a transistor for feeding (controlling)
`
`current to an EL device is referred to as a driving transistor, while a transistor
`
`operating as a switch like the transistor 211b in Fig. 62 referred to as a switching
`
`transistor.
`
`10
`
`EL device 215 has a rectification property in many eases and hence
`
`is called OLED (Organic Light-Emitting Diode) as the ease may be. For this
`
`reason, the EL device 215 in Fig. 62 is regarded as an OLED and represented by
`
`the symbol of a diode.
`
`In the example shown in Fig. 62, the source terminal (S) of p·channel
`
`15
`
`transistor 211a is connected to Vdd (power source potential), while the cathode
`
`(negative electrode) of the EL device 215 connected to ground potential (Vk). On
`
`the other hand, the a.node (positive electrode) is connected to the drain terminal
`
`(D) of the transistor 211b. T'he gate terminal of the p-channel transistor 211b is
`
`connected to a gate signal line 217a, the source terminal connected to a source
`
`20
`
`signal line 218, and the drain terminal com1ected to the storage capacitor 219 and
`
`the gate terminal (G-) of the transistor 211a.
`
`In order to operate the pixel 216, first, the source signal line 218 is
`
`applied with an image signal indicative ofluminance information with the gate
`
`signal line 217a turned into a selected state. Then, the transistor 211b becomes
`
`25
`
`conducting and the storage capacitor 219 is ehErrged or discharged, so that the
`
`gate potential of the transistor 2 lla becomes equal to the potential of the image
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`4
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`signal. When the gate signal line 217a is turned into an unselected state. the
`
`transistor 211a is turned off, so that the transistor 211a is electrically
`
`disconnected from the source signal line 218. However, the gate potential of the
`
`transistor 211a is stably maintained by means of the storage capacitor 219. The
`
`5 Cltrrent passing through the EL device 215 via the transistor 211a comes to
`
`assume a value corresponding to voltage Vgs across the gate and the source
`
`terminals of the transistor lla, vvith the result that the EL device 215 keeps on
`
`emitting light at a luminance corresponding to the amount of current fed thereto
`
`through the transistor 211a.
`
`10
`
`As described above. according to the prior art configuration shown in
`
`Fig. 62, one pixel comprises one selecting transistor (switching device) and one
`
`chiving transistor. Another prior art confi6:ruration is disclosed in Japanese
`
`Patent Laid-Open Publication No. HK! 11-327637 for example. T'his publication
`
`describes an embodiment in which a pixel comprises a current mirror circuit.
`
`15
`
`Meanwhile, the organic EL display panel is usually manufactured
`
`using a low temperature polysilicon transistor array. Since organic EL devices
`
`emit light based on current, the organic EL display panel involves a problem that
`
`display irregularities occur if there are variations in transistor characteristics.
`
`Further, a conventional EL display panel cannot sufficiently
`
`20
`
`charge/dischm·ge the parasitic capacitance which is present in the source signal
`
`line 18. For this reason there arises a problem that in some cases a desired
`
`current cannot be fed to pixel 16.
`
`Disclosure of Invention
`
`25
`
`The present invention has been rnade in view of the foregoing
`
`circumstances. It is an object of the present invention to provide an EL display
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`5
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`apparntus which is capable of realizing satisfactory image display by sufficiently
`
`charging/discharging the parasitic capacitance present in the source signal line.
`
`In order to attain this object, an EL tlisplay apparatus according to
`
`the present invention comprises: a plurality of gate signal lines and a plurality of
`
`5
`
`source signal lines. which are arranged to intersect each other; EL devices
`
`arranged in a matri.x pattern, each of the EL devices being operative to emit light
`
`at a luminance corresponding to a cunent fed thereto; a gate driver operative to
`
`output a gate signal to each of the gate sib:rnal lines; a source driver operative to
`
`output to each of the source signal lines a cur.rent which is higher than a cuITent
`
`10
`
`corresponding to an image signal inputted from outside; a transistor, provided for
`
`each of the EL devices, for outputting the current outputted from the source driver
`
`to the EL device; and a first switching device capable offeeding the current
`
`outputted from the source driver to the EL device by switching to bring the EL
`
`device and the transistor into and out of conduction thereacross in accordance
`
`15 with the gate signal fed thereto through the gate signal line, wherein the gate
`
`driver is configured to output the gate signal to the gate signal line in a manner to
`
`bring the EL device and the transistor into and out of conduction thereacross at
`
`least once in a one-frame period.
`
`\,Vith this construction, the source driver outputs a higher current
`
`20
`
`than the current corresponding to the image signal to the source signal line and,
`
`hence, even if a parasitic capacitance is present in the source signal line, the
`
`parasitic capacitance can he charged/discharged. Vi/hen such a high current is
`
`fed to the EL device, the EL device emits light at a higher luminance than a
`
`luminance corresponding to the image signal. By making the duration of current
`
`25
`
`feed to the EL device shorter than the one-frarne period, the time period for which
`
`the EL device emits light can be shortened., with the result that image display at a
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`6
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`luminance equivalent to the luminance corresponding to the image signal is
`
`realized.
`
`In the EL dis.Play apparatus according to the above-described
`
`invention, the gate driver may be configured to output the gate si6:rnal to the gate
`
`5
`
`signal line in a manner to bring the EL device and the transistor into and out of
`
`conduction thereacross plural times periodically in the one-frame period.
`
`With this feature, the so-called interlaced driving can be realized,
`
`·which can prnvide for more satisfactory image display.
`
`The EL display apparatus according to the above-described
`
`10
`
`invention may further cornprise a second switching device capable of feeding the
`
`current outputted from the source driver to the transistor by switching to bring
`
`the source driver and the transistor into and out of conduction thereacross in
`
`accordance with the gate signal fed thereto through the gate signal line, wherein
`
`the gate driver is configured to bring the source driver and the transistor into
`
`15
`
`conduction thereacross to program the transistor 'vvith the current outputted from
`
`the source driver while the EL devi.ce and the transistor are out of conduction
`
`thereacross and then output the gate signal to the gate sig11al line in a manner to
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`bring the EL device and the transistor into and out of conduction thereacross at
`
`least once in the one-frame period.
`
`20
`
`With this feature, display irregularities due to variations in
`
`transistor characteristics can be prevented, whereby satisfatetory image display
`
`can be realized.
`
`In the EL display apparatus according to the above-described
`
`invention, the gate driver and the transistor may be formed in a same process.
`
`25
`
`Specifically, the gate driver and the driver [sic] rnay be formed using the low
`
`temperature polysilicon technology for example. The frmnation of these
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`7
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`components in this manner makes it possible to narrow the frame.
`
`In the EL display apparatus according to the above-described
`
`invention, the source driver may comprise a semiconductor chip.
`
`According to the present invention, there is also provided an EL
`
`5
`
`display apparatus comprising: a plurality of gate sig11al lines and a plurality of
`
`source signal lines, which are arranged to intersect each other; EL de\~ces
`
`arranged in a matrix pattern, each of the EL devices being operative to emit light
`
`at a luminance corresponding to a current fed thereto; a gate driver operative to
`
`output a gate signal to each of the gate signal lines; a source driver operative to
`
`10
`
`output to each of the source signal lines a current which is higher than a current
`
`corresponding to an image signal inputted from outside; a switching device
`
`provided for each of the EL devices and capable of feeding the EL device with a
`
`current fed through the source signal line by switching to bring the EL device and
`
`the source signal line into and out of conduction thereacross in accordance with
`
`15
`
`the gate signal ft-xl thereto through the gate signal line; a plurality of dummy
`
`devices located in a region different from a region where the EL devices are
`
`formed, the dummy devices being of substantially no use in image display; and a
`
`second switching device provided for each of the dummy devices and capable of
`
`feeding the dummy device with the current fed through the source signal line by
`
`20
`
`switching to bring the dummy device and the source signal line into and out of
`
`conduction thereacross in accordance with the gate signal supplied thereto
`
`through the gate signal line, wherein the gate driver is configured to output gate
`
`signals to the gate signal line associated \l\lith the EL device and the gate signal
`
`line associated with the dummy device at substantially the same timing, whereby
`
`25
`
`the EL device and the dumrny device are fed with the current fed through the
`
`source signal line dividedly therebetween.
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`8
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`With this construction, the source driver outputs a higher cmrent
`
`than the cmTent corresponding to the image signal to the source signal line and,
`
`hence, even if a parasitic capacitance is present in the source signal line, the
`
`parasitic capacitance can be chargedldischarged. Even when the source cl.Tiver
`
`5
`
`outputs the higher cur.rent than the cur.rent corresponding to the image signal to
`
`the source signal line, the EL device can be prevented from emitting light at a
`
`higher luminance than necessary because the current outputted from the source
`
`driver is divided into shares which are fed to the EL device and the dummy device,
`
`respectively.
`
`10
`
`The EL display apparatus according to the above-described
`
`invention may have an arrangement wherein: the gate signal line associated with
`
`the dummy device is formed to extend adjacent the gate signal line associated
`
`with EL devices in a first or final row; and the gate driver is configured to output
`
`gate signals to gate signal lines associated with a series of adjacent rows at
`
`15
`
`substantially the same timing series by series sequentially, whereby plural EL
`
`devices or the pair of the EL device and the dummy device are fed with the
`
`current fed through the source signal line dividedly therebetween.
`
`According to the present invention, there is also provided a method
`
`of driving an EL display apparatus having an EL device which is operative to emit
`
`20
`
`light at a luminance corresponding to a current fed thereto, and a source driver
`
`operative to output a current to the EL device through a source signal line, the
`
`method comprising the steps of. causing the source driver to output to the source
`
`signal line a cur.rent higher than a current corresponding to an image signal
`
`inputted from outside; and feeding the EL device with the cmTent outputted to
`
`25
`
`the source signal line for a part of a one-frame period to cause the EL device to
`
`emit light at a luminance corresponding to the current outputted to the source
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`9
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`signal line for the part of the one-frame period.
`
`In the method of driving an EL display apparatus according to the
`
`above-described invention, the part of the one-frame period may be divided into
`
`plural periods.
`
`5
`
`An electronic apparatus according to the present invention
`
`comprises an EL display apparatus as recited in claim 1 and an arrangement for
`
`outputting an image si6.rnal to the El display apparatus.
`
`According to the present invention, there is also prnvided an EL
`
`display apparatus comprising: EL devices arranged in a matrix pattern; a driving
`
`10
`
`transistor operative to feed a current to each of the EL devices; a first switching
`
`device disposed between the EL device and the ckiving transistor; and a gate
`
`m."iver operative to on--off control the first switching device, wherein the gate m."iver
`
`is configured to control the first switching device in a manner to turn the first
`
`switching device off at least once within a one-frame period.
`
`15
`
`In the EL display apparatus according to the above-described
`
`invention, the first switching device may be controlled in a manner to turn off
`
`plural times periodically within the one-frame period.
`
`According to the present invention, there is also provided an EL
`
`display apparatus comprising: a source cmver circuit operative to output a
`
`20
`
`programming current; EL devices an·anged in a matrix pattern; a driving
`
`transistor operative to feed a current to each of the EL devices; a first switching
`
`device disposed between the EL device and the driving transistor; a second
`
`switching device forming a path for transmitting the prog-.ramming current to the
`
`driving transistor; and a gate i.lriver circuit operative to on-off control the first and
`
`25
`
`second switching devices, wherein the gate driver is configured to control the first
`
`switching device in a manner to turn the first switching device on at least once
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`10
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`and off at least once vvithin a one-frame period.
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`In the EL display apparatus according to the above-described
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`invention, it is possible that the gate driver and the driving transistors are formed
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`in a same process, while the source driver comprises a semiconduct:::ir chip.
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`5
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`According to the present invention, there is also provided an EL
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`display apparatus comprising: gate signal lines; sotffce signal lines; a source
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`driver operative to output a programming cur.cent; a gate driver; EL devices
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`mranged in a matrix pattern; a driving transistor operative to feed a current to
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`each of the EL devices; a first transistor disposed between the EL device and the
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`10
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`driving transistor; and a second transistor forming a path for transmitting the
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`programming current to the driving transistor, wherein: the source driver is
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`operative to output the prog-.ramming current to each of the source signal lines;
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`the gate driver is connected to each of the gate signal lines; the second transistor
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`has a gate terminal connected to the gate signal line, a source terminal connected
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`15
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`to the source sig11al line, and a drain terminal connected to the drain terminal of
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`the driving transistor; and the gate driver is configured to select plural ones of the
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`gate signal lines to feed the programming current to the driving transistor of each
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`of plural pixels and control the first transistor in a manner to turn the first
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`transistor on at least once and off at least once within a one-frame period.
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`20
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`In the EL display apparatus according to the above-described
`
`invention, it is possible that the gate driver and the driving transistors are fo:nned
`
`in a same process, while the source driver comprises a semiconductor chip.
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`According to the present invention, there is also provided an EL
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`display apparatus comprising: a display region including I pixel rows (I is an
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`25
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`integer not less than 2) and ,J pixel columns (tl is an integer not less than 2); a
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`source driver operative to apply video signals to source signal lines in the display
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`11
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`region; a gate driver operative to apply on-voltage or off-voltage to gate signal
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`lines in the display region; and a dummy pixel row formed in a region other than
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`the display region, wherein the display region is formed with EL devices arranged
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`in a matrix pattern. each of which is operative to emit light in accordance with the
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`5
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`video signals from the source driver. while the dummy pixel row is con.figured
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`such that the dummy pixel row fails to emit light or its light-emitting state is not
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`recognized visually.
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`In the EL display apparatus according to the above-described
`
`invention, the gate driver may be configmed to select plural pixel rows at a time
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`10
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`for the pixel rows selected to be applied with the video signals from the source
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`driver in a manner that the dummy pixel row is selected when the first pixel row
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`or the Ith pixel row is selected.
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`According to the present invention, there is also provided a method
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`of driving an EL display apparatus characterized by: feeding the EL device with a
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`15
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`current that causes the EL device to emit light at a luminance higher than a
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`predetermined luminance; and causing the EL device to emit light for a 1/N part
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`of a one-fr·ame period (N is less than 1).
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`In the method of driving an EL display apparatus according to the
`
`above-described invention, the 1/N part of the one-frame period may be divided
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`20
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`into plmal periods.
`
`According to the present invention, there is also provided a method
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`of driving an EL display apparatus adapted for programming of a current to pass
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`through an EL device based on a current, characterized by: causing the EL device
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`to emit light at a luminance higher than a predetermined luminance to provide a
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`25
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`display in a 1/N (N>l) portion of a display region; and sequentially shifting the
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`1/N portion of the display region to another thereby causing the whole display
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`12
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`region to display.
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`According to the present invention, there is further provided an
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`electronic apparatus characterized by comprising: an EL display apparatus as
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`recited in claim 11, a receiver, and a speaker.
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`5
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`The frn-egoing and other objects, features and advantages of the
`
`present invention will become apparent from the following detailed description of
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`the preferred embodiments with reference to the accompanying drawings.
`
`Brief Description of Drawings
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`10
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`Fig. 1 is a diagram illustrating a pixel configuration of an EL display
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`panel according to the present invention.
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`Fig. 2 is a dia6:rram illustrating a pi-..::el configuration of an EL display
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`panel according to the present invention.
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`Fig. 3 is an explanatory diagram illustrating an operation of an EL
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`15
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`display panel according to the present invention.
`
`Fig. 4 is an explanatory chart illustrating an operation of an EL
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`display panel according to the present invention.
`
`Fig. 5 is an explanatmy view illustrating a method of driving an EL
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`display apparatus according to the present invention.
`
`20
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`Fig. 6 is a dia6:rram illustrating a coni'ib'llration of an EL display
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`apparatus according to the present invention.
`
`Fig. 7 is an explanatory view illustrating a method of manufacturing
`
`an EL display panel according to the present invention.
`
`Fig. 8 is a diagram illustrating a configuration of an EL display
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`25
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`apparatus according to the present invention.
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`Fig. 9 is a diagram illustrating a coni'iguration of an EL display
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`rn
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`appai-atus according to the present invention.
`
`Fig. 10 is a sectional view of an EL display panel according to the
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`present invention.
`
`Fig. 11 is a sectional view of an EL display panel according to the
`
`5
`
`present invention.
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`Fig. 12 is an explanatory chart illustrating an EL display panel
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`according to the present invention.
`
`Fig. 13 is an explanatory view illustrating a method of cb."i·ving an EL
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`display apparatus according to the present invention.
`
`10
`
`Fig. 14 is an explanatory chart illustrating a method of driving an
`
`EL display apparatus according to the present invention.
`
`Fig. 15 is an explanatory chart illustrating a method of cb."iving an
`
`EL display apparatus according to the present invention.
`
`Fig. 16 is an explanatory view illustrating a method of driving an EL
`
`15
`
`display apparatus according to the present invention.
`
`Fig. 17 is an explanatory chm't illustrating a method of driving an
`
`EL display apparatus according to the present invention.
`
`Fig. 18 is an explanatory chart illustrating a method of driving an
`
`EL display apparatus according to the present invention.
`
`20
`
`Fig. 19 is an explanatory ,riew illustrating a method of driving an EL
`
`display apparatus according to the present invention.
`
`Fig. 20 is an explanatory view illustrating a method of driving an EL
`
`display apparatus according to the present invention.
`
`Fig. 21 is an explanatmy chart illustrating a method of driving an
`
`25
`
`EL display apparatus according to the present invention.
`
`Fig. 22 is an explanatory view illustrating a method of driving an EL
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`display apparatus according to the present invention.
`
`14
`
`FIG