WO2013102997A1 - ディスプレイ装置 - Google Patents
ディスプレイ装置 Download PDFInfo
- Publication number
- WO2013102997A1 WO2013102997A1 PCT/JP2012/050022 JP2012050022W WO2013102997A1 WO 2013102997 A1 WO2013102997 A1 WO 2013102997A1 JP 2012050022 W JP2012050022 W JP 2012050022W WO 2013102997 A1 WO2013102997 A1 WO 2013102997A1
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- WO
- WIPO (PCT)
- Prior art keywords
- display
- luminance
- display panel
- sensor
- light
- Prior art date
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/005—Illumination controller or illuminated signs including an illumination control system
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
- G09G2320/0633—Adjustment of display parameters for control of overall brightness by amplitude modulation of the brightness of the illumination source
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
- G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
Definitions
- the present invention relates to a display device including a luminance sensor that detects the luminance of a display panel.
- Some display devices used as monitors for various electronic devices have a function of automatically adjusting the brightness of the display surface.
- the brightness of the display surface is detected by a brightness sensor, and the display surface drive circuit is automatically set in the controller so that the brightness of the display surface is within a preset range based on the detected brightness. Control.
- a display panel including a liquid crystal display panel and a drive circuit for driving the display panel are accommodated in a housing of the display device.
- An opening that exposes the display surface of the display panel is formed in the housing, and a frame that closes a gap between the outer periphery of the display panel and the housing is provided in the opening.
- Patent Document 1 discloses a display device in which a luminance sensor is attached to a frame located on the outer peripheral portion of a display surface. As a result, the luminance sensor detects the luminance at a specific position where the luminance detection display pattern is displayed on the display surface.
- the frame provided in the opening of the display panel and the casing is subject to relative displacement (displacement) due to heat generated when the display panel is driven, temperature changes based on the external environment, external vibration, etc. There is.
- the luminance sensor fixed to the frame on the display surface also causes a positional shift. Therefore, the position where the luminance sensor detects the luminance is Deviation from a specific position.
- a region to be inspected on the display surface by the luminance sensor is a special image for inspection arranged at a position invisible to the observer.
- the area of the inspection area where the display pattern is displayed on the display surface is set larger than the detection area by the luminance sensor, and even if relative displacement between the display panel and the frame due to heat or vibration occurs, it is always It can be considered that the luminance sensor can detect the luminance within the range of the specific position. However, this increases the area of the region to be inspected necessary for luminance detection on the display surface, and there is a problem that an information display area for effective images and the like is limited.
- the relative displacement between the display panel and the frame includes a shift in the Z direction orthogonal to the display surface, in addition to a shift in the XY direction along the display surface.
- the luminance detected by the luminance sensor varies according to the square of the distance between the luminance sensor and the display surface. It is not preferable that the display panel and the frame are affected by fluctuation in a direction perpendicular to the surface of the display surface. Therefore, it is conceivable to increase the rigidity of the display panel and the frame, or to increase the rigidity of the fixture that supports the brightness sensor. Detrimental effects such as area reduction occur.
- the present invention has been made in view of such a problem, and can stably detect the luminance of the display surface by the luminance sensor with high accuracy without being affected by a temperature change of the display device.
- An object is to provide a display device.
- the display device of the present invention includes a display panel main body, and a luminance sensor unit including a luminance sensor that is fixed on the display surface of the display panel main body and detects the luminance of the display panel main body.
- the brightness sensor unit having the brightness sensor is fixed on the display surface of the display panel body, so that the brightness sensor can be used even when the display panel body or the frame is deformed or displaced by temperature, driving heat, vibration, or the like. Does not deviate from a predetermined region of the display surface, that is, the region to be inspected, so that the luminance of the display surface can be detected with high accuracy by the luminance sensor.
- the luminance sensor unit includes a sensor holder made of a light transmissive material having an adhesive surface bonded to the display surface of the display panel main body, and a light diffusing portion that diffuses light from the display panel main body. And a luminance sensor fixed at a position facing the display surface with the light diffusion portion interposed therebetween.
- the light emitted from the display surface of the display panel main body reaches the brightness sensor via the sensor holder, and can diffuse the light irradiated from the display surface by passing through the light diffusion portion of the sensor holder.
- the brightness can be detected stably by the brightness sensor.
- the light diffusing portion may be formed by subjecting the surface facing the adhesive surface to a concavo-convex treatment.
- the light diffusion part may be a light diffusion member containing a light diffusion material. In any case, since the light from the display panel body is diffused by the light diffusing unit and can be received by the luminance sensor, stable luminance can be detected.
- the sensor holder preferably includes a base portion in which a housing recess for housing the brightness sensor is formed, and a light diffusion portion is provided at a position facing the brightness sensor in the housing recess. Light from the display panel main body is diffused by the light diffusing portion and can be received by a luminance sensor provided in the housing recess.
- the luminance sensor unit has a non-contact structure with a frame and a bezel provided on the outer peripheral portion of the display panel body.
- the luminance sensor may be connected to a luminance control unit that adjusts the luminance of the display panel main body via a flexible cable.
- a luminance control unit that adjusts the luminance of the display panel main body via a flexible cable.
- the brightness sensor unit having the brightness sensor is fixed on the display surface of the display panel body, so that the brightness sensor unit can display even if the display panel body is deformed or displaced by vibration or heat. There is no deviation from the bonding position on the surface.
- the luminance of the display surface can be detected with high accuracy without being affected by the change.
- FIG. 2 is an enlarged sectional view taken along line AA of FIG. 1 showing a luminance sensor unit.
- FIG. 4 is an enlarged view of the luminance sensor unit shown in FIG. 3. It is a disassembled perspective view which shows the structure of the brightness
- the display device 10 includes a display panel body 11 including a liquid crystal display panel and the like, a control panel including a display panel body 11 and a drive circuit for driving the display panel body 11.
- a built-in housing 12 and a base member 13 that supports the housing 12 are provided.
- the base member 13 includes, for example, a base plate 14 and support columns 15 that are provided on the base plate 14 and support the housing 12.
- the display panel body 11 has a display surface 11a formed of a transmissive panel.
- the outer peripheral portion of the transmission panel is covered with a panel frame 17 that forms the outer surface 11 b of the display panel body 11.
- the panel frame 17 includes a pressing portion 17 a that extends in parallel with the display surface 11 a at the outer peripheral portion of the display panel body 11.
- the housing 12 is a back housing (not shown) that covers the entire back surface of the display panel body 11 and a square that is fitted into the back housing and closes the outer peripheral portion of the display panel body 11 on the display surface 11 a side of the display panel body 11.
- a frame-shaped bezel 18 is provided.
- the bezel 18 has an L-shaped cross section, is parallel to the outer surface 11b of the display panel main body 11, is orthogonal to the outer peripheral wall portion 18a and the outer peripheral wall portion 18a fitted in the rear housing, and is displayed on the display panel main body 11.
- a cover portion 18b that covers the outer peripheral portion of the display panel main body 11 is positioned parallel to the surface 11a.
- the pressing portion 17a of the panel frame 17 and the cover portion 18b of the bezel 18 face each other with a gap therebetween.
- the luminance sensor unit 30 is provided at the end of the display surface 11 a of the display panel body 11. As shown in FIG. 5, the luminance sensor unit 30 includes a substrate 31 provided on the pressing portion 17 a of the panel frame 17 and a sensor main body 32.
- the substrate 31 constitutes a part of the drive circuit of the display panel main body 11 and is electrically connected to a main substrate or the like provided on the back side of the display panel main body 11 or the like.
- a connector 33 for connecting the sensor main body 32 is provided at the end of the substrate 31.
- the sensor body 32 has a sensor holder 34 that is fixed to the display surface 11 a of the display panel body 11. As shown in FIGS. 3 and 4, the sensor holder 34 is formed in a substantially L shape by a transparent or milky white translucent light transmissive material, and is fixed at a specified position on the surface of the display panel body 11. And a thin plate-like stay portion 36 extending in parallel to the display surface 11 a from the base portion 35 toward the cover portion 18 b of the bezel 18.
- the base portion 35 is formed into a substantially bottomed cylindrical shape by a plate-like core portion 35a and a cylindrical portion 35e on the surface side that is bonded to the display surface 11a of the display panel body 11, and the inside of the base portion 35 includes an accommodation recess 35b.
- a brightness sensor 42 that measures the brightness of the display surface 11a of the display panel body 11 is housed in the housing recess 35b.
- the outer peripheral surface including the cylindrical portion 35e is coated with a light-shielding paint or the like that does not transmit light.
- the bottom surface 35c is not painted.
- the base 35 has a bottom surface 35c bonded and fixed on the display surface 11a of the display panel body 11 at a position facing an area A where a prescribed display pattern for detecting luminance is displayed.
- an adhesive or the like is used, and it is particularly preferable to use an ultraviolet (UV) curable adhesive.
- UV ultraviolet
- the base portion 35 may move on the display surface 11a before the solvent evaporates or until the adhesive solidifies.
- an ultraviolet curable adhesive is preferable because the adhesive is cured in a short time by irradiating ultraviolet rays, and the base portion 35 can be quickly bonded and fixed on the display surface 11a.
- a double-sided tape instead of the adhesive.
- the double-sided tape has a relatively small adhesive ability, and if it is to be compensated, a large adhesive area is required and the base portion 35 is enlarged.
- an ultraviolet curable adhesive it is preferable that sufficient adhesive strength can be obtained with a smaller adhesive area, and the base portion 35 can be miniaturized.
- the inner surface 35d of the accommodating recess 35b facing the bottom surface 35c bonded to the display surface 11a is subjected to a light diffusion process for diffusing light as a light diffusion portion.
- This light diffusion portion is configured by forming irregularities or the like on the inner surface 35d.
- the thin stay portion 36 of the luminance sensor unit 30 extends from the base portion 35 toward the cover portion 18b of the bezel 18, and the tip portion of the display panel body 11 is orthogonal to the direction in which the stay portion 36 extends.
- a mounting portion 37 that is continuous in a direction along the outer peripheral portion is formed. Due to the base portion 35, the stay portion 36, and the attachment portion 37, the sensor holder 34 has a substantially T-shape as shown in FIG. As shown in FIG. 3, the stay portion 36 and the mounting portion 37 are provided between the pressing portion 17 a of the panel frame 17 and the cover portion 18 b of the bezel 18 so as to be in a non-contact state with respect to both. Yes.
- the separation distance between the stay part 36 and the attachment part 37 and the panel frame 17 and the separation distance between the stay part 36 and the attachment part 37 and the bezel 18 are 1 to 2 mm.
- the sensor member 40 is mounted on the mounting portion 37 of such a sensor holder 34.
- the sensor member 40 includes a flat cable (flexible cable) 41 having a substantially T-shape in a plan view supported on the mounting portion 37 of the sensor holder 34, and is mounted on the flat cable 41 and within the receiving recess 35 b of the sensor holder 34. And a luminance sensor 42 held by the device.
- the flat cable 41 has one end 41 a connected to the connector 33 of the substrate 31.
- the flat cable 41 extends from the one end 41a in the opposite direction along the outer peripheral portion of the display panel main body 11, is turned back by 180 ° at the turned-back portion 41b, and then is attached to the outer periphery of the display panel main body 11 on the attachment portion 37. It is formed in a substantially T shape so as to be orthogonal to the portion and to extend toward the base portion 35 on the stay portion 36.
- the flat cable 41 is fixed on the attachment portion 37 with double-sided tape.
- the luminance sensor 42 is provided in the other end 41 c of the flat cable 41, and is disposed in a housing recess 35 b formed in the base portion 35.
- the flat cable 41 of the sensor member 40 is sandwiched between a sensor holder 34 provided on one surface and a cover 45 covering the other on the other surface.
- One end of the cover 45 is located between the cover portion 18 b of the bezel 18 and the sensor member 40, and is disposed with a gap with respect to the bezel 18.
- the brightness sensor unit 30 moves freely without being fixed to other parts except that the sensor holder 34 is fixed to the display surface 11a and the flat cable 41 that moves freely is connected to the connector 33 of the substrate 31. be able to. Therefore, the luminance sensor unit 30 is not affected by the displacement of the panel frame 17 and the bezel 18 of the display panel body 11.
- the above-described luminance sensor unit 30 has the luminance detection displayed in the area A on the display surface 11 a of the display panel body 11 by the luminance sensor 42 fixed in the base portion 35 of the sensor holder 34. Measure the light intensity of the specified display pattern. Then, in a luminance control unit (not shown) of the display device 10, a light source such as a backlight provided on the back side of the display panel main body 11 based on a predetermined operation program according to the measurement result of the luminance sensor 42. Adjust the light output. Then, brightness adjustment, gradation characteristic adjustment, and change are automatically executed according to the light output of the light source at that time.
- the bottom surface 35c of the base portion 35 in the luminance sensor unit 30 is formed on the display surface 11a of the display panel body 11 by an ultraviolet curable adhesive. Since it is fixed, the display surface 11a is not displaced due to temperature change, heat, or vibration, and luminance variation due to the displacement does not occur, and the luminance detection accuracy can be maintained high. Accordingly, it is only necessary to secure a minimum area for luminance detection on the display surface 11a, so that an effective information display area can be ensured to the maximum. In such a configuration, the luminance sensor unit 30 is not increased in size, and there is no adverse effect such as an increase in size and an increase in weight of the display device 10.
- the luminance sensor unit 30 is provided with the light diffusion portion subjected to the light diffusion process on the inner surface 35d of the housing recess 35b in the base portion 35, the light emitted from the display surface 11a is transmitted through the core portion 35a of the base portion 35. Since the light is diffused by the light diffusing portion of the inner surface 35c of the housing recess 35b and reaches the luminance sensor 42, more stable luminance measurement can be performed.
- the brightness sensor unit 30 is provided between the pressing portion 17a of the panel frame 17 and the cover portion 18b of the bezel 18 so as to be in a non-contact state with respect to both, so that the panel frame 17 and the bezel Even if 18 is displaced or deformed by heat or the like, it is possible to prevent the luminance sensor unit 30 from being displaced.
- the base portion 35 only by the cylindrical tubular portion 35e without providing the core portion 35a, a plate-shaped core portion serving as a bottom on the display surface 11a side of the tubular portion 35e.
- a bonding area to the display surface 11a of the display panel main body 11 by the bottom 35c that is one surface of the core portion 35a, and to reduce the size of the luminance sensor unit 30.
- a uniform and stable measurement of luminance can be performed by forming a light diffusing portion having unevenness on the inner surface 35d facing the bottom portion 35c to disperse incident light.
- an ultraviolet (UV) curable adhesive is used for bonding the base portion 35 to the display surface 11a of the display panel main body 11, the luminance sensor unit 30 can be quickly attached and the adhesive bleeds. Prevents high-quality brightness measurement.
- UV ultraviolet
- the display device of the present invention is not limited to the above-described embodiment described with reference to the drawings, and various changes and modifications can be applied without departing from the gist of the present invention.
- a light diffusing portion having unevenness may be formed on the bottom surface 35 c that adheres to the display surface 11 a of the display panel body 11.
- an uneven light diffusion portion may be formed only on the bottom surface 35c, which is an adhesive surface to the display surface 11a.
- FIG. 6 shows a modification of the luminance sensor unit 30 according to the above-described embodiment.
- the base part 35 of the sensor holder 34 that houses the luminance sensor 42 fixed to the flat cable 41 has a cylindrical part 35e.
- a plate-like light diffusing member 47 is fixed to an end portion of the cylindrical portion 35e of the base portion 35 facing the luminance sensor 42.
- the base portion 35 constitutes a housing recess 35 b that houses the brightness sensor 42 by the cylindrical portion 35 e and the light diffusing member 47.
- the light diffusing member 47 includes a light diffusing material having a fine particle diameter dispersed therein, and the light diffusing member having such a configuration is also included in the light diffusing portion.
- corrugation may be formed in the inner surface 47a by the side of the brightness
- a surface 47b facing the inner surface 47a of the light diffusing member 47 is an adhesive surface to the display surface 11a.
- the configuration of the display device 10 itself is not limited at all, and any other configuration such as the display method of the display panel body 11 and the structure of each other part may be used.
- the luminance sensor unit 30 itself may be housed in the bezel 18 and the luminance detection may be performed at a portion covered by the bezel 18. In addition to this, as long as it does not depart from the gist of the present invention, the configuration described in the above embodiment can be selected or changed to another configuration as appropriate.
- the display device has a luminance sensor unit fixed on the display surface of the display panel body, and the luminance sensor unit forms an accommodating recess for accommodating the luminance sensor, and light is applied to the inner surface of the accommodating recess facing the luminance sensor.
- a diffusion portion was formed and a bottom surface facing the inner surface was bonded and fixed to the display surface.
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Abstract
Description
このような変位が表示パネルの表示面に沿ったX-Y方向で生じると、表示面上においてフレームに固定された輝度センサーも位置ズレを生じるため、輝度センサーによる輝度を検出する位置が前記の特定位置からずれてしまう。輝度センサーによる表示面の被検査領域は観察者から見えない位置に配設された検査用の特別な画像である。輝度センサーの位置ズレが生じると、検出する輝度にばらつきが生じ、輝度の検出精度、輝度の自動調整性能が低下する。
しかしながら、これでは、表示面上において輝度検出のために必要な被検査領域の面積が大きくなり、有効な画像などの情報表示エリアが制限されてしまうという問題がある。
そこで、表示パネルとフレームとの剛性を高めたり、輝度センサーを支持する取付具の剛性を高めることも考えられるが、それでは、ディスプレイ装置の大型化、重量増加、取付具の大型化に伴う情報表示エリアの減少、等といった弊害が生じる。
すなわち、本発明のディスプレイ装置は、表示パネル本体と、表示パネル本体の表示面上に固定されていて表示パネル本体の輝度を検出する輝度センサーを備えた輝度センサーユニットと、を備えたことを特徴とする。
本発明によれば、輝度センサーを有する輝度センサーユニットを表示パネル本体の表示面上に固定することで、表示パネル本体やフレームが温度や駆動熱や振動等により変形・変位しても、輝度センサーが表示面の所定領域、すなわち被検査領域からずれることがないため表示面の輝度を輝度センサーによって高精度に検出できる。
表示パネル本体の表示面から発せられた光は、センサホルダを介して輝度センサーに到達し、しかもセンサホルダの光拡散部を透過することによって表示面から照射される光を拡散させることができるため、輝度センサーによって安定して輝度の検出を行える。
いずれの場合でも、表示パネル本体からの光は光拡散部で拡散されて輝度センサーで受光できるため、安定した輝度を検出できる。
表示パネル本体からの光は光拡散部で拡散されて収容凹部内に設けた輝度センサーで受光できる。
このような構成とすれば、表示パネルの駆動熱や周囲環境の温度や振動等によってフレームやベゼルが熱膨張したり収縮したりしても、輝度センサーを収容する輝度センサーユニットが表示パネル本体のフレームやベゼルの変位に応じて変位するなどの悪影響を受けない。
これにより、表示パネル本体の変形や変位が輝度制御部から輝度センサーに伝達されるのをフレキシブルケーブルによって吸収して防ぐことができる。
しかも、ディスプレイ装置等の大型化や重量増加、情報表示エリアの制限等を招くことなく輝度センサーによる輝度の高精度な検出を行える。
図1に示すように、本実施形態によるディスプレイ装置10は、液晶表示パネル等からなる表示パネル本体11と、表示パネル本体11及びこの表示パネル本体11を駆動する駆動回路を備えた制御基板等を内蔵した筐体12と、筐体12を支持するベース部材13と、を備えている。
ベース部材13は、例えば、ベースプレート14と、ベースプレート14上に設けられていて筐体12を支持する支柱15とから構成されている。
このベゼル18は、断面L字状で、表示パネル本体11の外側面11bに平行で、背面筐体に嵌め込まれた外周壁部18aと、外周壁部18aに直交し、表示パネル本体11の表示面11aと平行に位置して、表示パネル本体11の外周部を覆うカバー部18bとを有する。ここで、パネルフレーム17の押さえ部17aとベゼル18のカバー部18bとは、間隔を隔てて互いに対向している。
図5に示すように、輝度センサーユニット30は、パネルフレーム17の押さえ部17a上に設けられた基板31と、センサ本体32とを備えている。
センサホルダ34は、図3及び図4に示すように、透明あるいは乳白色等をなした半透明の光透過性材料により略L字状に形成され、表示パネル本体11の表面の規定位置に固定されてなるベース部35と、ベース部35からベゼル18のカバー部18bに向けて、表示面11aに平行に延びる薄板状のステー部36とを有する。
ベース部35の表示面11aへの固定手段としては、接着剤等を用いるものとし、特に紫外線(UV)硬化型の接着剤を用いることが好ましい。通常の溶剤揮発型の接着剤では、溶剤が揮発するまでの間に周囲に滲んだり、接着剤が固化するまでの間にベース部35が表示面11a上で動いてしまう可能性がある。
ステー部36および取付部37は、図3に示すように、パネルフレーム17の押さえ部17aとベゼル18のカバー部18bとの間に、双方に対して非接触な状態で位置するよう設けられている。ステー部36および取付部37とパネルフレーム17の離間距離、ステー部36および取付部37とベゼル18との離間距離は、1~2mmである。この構成によって、パネルフレーム17やベゼル18が温度変化によって伸縮したりしても輝度センサーユニット30に悪影響を与えない。
図4において、センサ部材40のフラットケーブル41は、その一方の面にセンサホルダ34が配設され、他方の面にこれらを覆うカバー45が設けられることで挟まれている。カバー45の一端は、ベゼル18のカバー部18bとセンサ部材40との間に位置し、ベゼル18に対しては間隙を空けて配置されている。
つまり、輝度センサーユニット30は、センサホルダ34が表示面11aに固定され、自由に動くフラットケーブル41が基板31のコネクタ33と接続される以外は他の部位に固定しておらず、自由に動くことができる。よって、輝度センサーユニット30は、表示パネル本体11のパネルフレーム17やベゼル18の変位の影響を受けない。
また、これに伴い、表示面11a上においては、輝度検出のために最低限の面積が確保できればよいので、有効な情報表示エリアを最大限に確保することができる。
そして、このような構成では、輝度センサーユニット30が大型化することもなく、ディスプレイ装置10の大型化、重量増加といった弊害も生じない。
また、底部35cに対向する内面35dに凹凸からなる光拡散部を形成して入射光を分散させたことで、均一で安定した輝度の測定を行える。
さらに、ベース部35の表示パネル本体11の表示面11aへの接着に紫外線(UV)硬化型の接着剤を用いるようにしたので、輝度センサーユニット30の取り付けを速やかに行えると共に接着剤のにじみを防いで高品質な輝度測定を行える。
なお、本発明のディスプレイ装置は、図面を参照して説明した上述の実施形態に限定されるものではなく、本発明の要旨を逸脱しない限り種々の変更や変形を適用することができる。
例えば、変形例として、ベース部35における収容凹部35b内の内面35dに加えて表示パネル本体11の表示面11aに接着する底面35cにも凹凸からなる光拡散部を形成しても良い。これにより、コア部35aの両面である底面35cと内面35dに光拡散部が形成されるため輝度センサー42で受光する光の拡散効果が二重に高く、より安定した輝度測定を行える。また、底面35cの凹凸面に接着剤が充填されるため、輝度センサーユニット30の表示パネル本体11の表示面11aへの接着強度を向上させることができる。また、内面35dに代えて表示面11aへの接着面である底面35cにのみ凹凸からなる光拡散部を形成してもよい。
この光拡散部材47は内部に微細粒径の光拡散材が分散配置されており、このような構成を有する光拡散部材も光拡散部に含めるものとする。
或いは、光拡散部材47における輝度センサー42側の内面47aまたは対向する表面47bに凹凸による光拡散部が形成されていてもよい。そして、光拡散部材47の内面47aに対向する表面47bが表示面11aへの接着面とされている。
さらには、輝度センサーユニット30自体をベゼル18内に収容し、ベゼル18に覆われる部分で輝度検出を行うような構成とすることも可能である。
これ以外にも、本発明の主旨を逸脱しない限り、上記実施の形態で挙げた構成を取捨選択したり、他の構成に適宜変更することが可能である。
11 表示パネル本体
11a 表示面
11b 外側面
12 筐体
13 ベース部材
14 ベースプレート
15 支柱
17 パネルフレーム
18 ベゼル
30 輝度センサーユニット
31 基板
32 センサユニット
34 センサホルダ
35 ベース部
35a コア部
35b 収容凹部
35c 底面
35d 内面
35e 筒状部
36 ステー部
40 センサ部材
41 フラットケーブル(フレキシブルケーブル)
42 輝度センサー
45 カバー
47 光拡散部材
A エリア
Claims (7)
- 表示パネル本体と、
前記表示パネル本体の表示面上に固定されていて前記表示パネル本体の輝度を検出する輝度センサーを備えた輝度センサーユニットと、
を備えたことを特徴とするディスプレイ装置。 - 前記輝度センサーユニットは、
前記表示パネル本体の前記表示面に接着された接着面と、前記表示パネル本体からの光を拡散する光拡散部と、を有する光透過性材料からなるセンサホルダと、
前記センサホルダの光拡散部を挟んで前記表示面と対向する位置に固定された前記輝度センサーと、
を備えたことを特徴とする請求項1に記載のディスプレイ装置。 - 前記光拡散部は、前記接着面に対向する面が凹凸処理されて形成されている請求項2に記載のディスプレイ装置。
- 前記光拡散部は、光拡散材を含有する光拡散部材である請求項2に記載のディスプレイ装置。
- 前記センサホルダは、前記輝度センサーを収容する収容凹部が形成されたベース部を備え、前記輝度センサーと対向する収容凹部の内面に前記光拡散部が設けられていることを特徴とする請求項2乃至4に記載のディスプレイ装置。
- 前記センサホルダは、前記表示パネル本体の外周部に設けられたフレーム及びベゼルと非接触構造とされていることを特徴とする請求項2乃至5のいずれか1項に記載のディスプレイ装置。
- 前記輝度センサーは、フレキシブルケーブルを介して前記表示パネル本体の輝度調整を行う輝度制御部に接続されていることを特徴とする請求項1乃至6のいずれか1項に記載のディスプレイ装置。
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JP2013552360A JP6004495B2 (ja) | 2012-01-04 | 2012-01-04 | ディスプレイ装置とその輝度検出方法 |
PCT/JP2012/050022 WO2013102997A1 (ja) | 2012-01-04 | 2012-01-04 | ディスプレイ装置 |
US14/368,841 US9396686B2 (en) | 2012-01-04 | 2012-01-04 | Display device |
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PCT/JP2012/050022 WO2013102997A1 (ja) | 2012-01-04 | 2012-01-04 | ディスプレイ装置 |
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WO2014061124A1 (ja) * | 2012-10-18 | 2014-04-24 | Necディスプレイソリューションズ株式会社 | ディスプレイ装置、及び画像表示方法 |
US10005627B2 (en) * | 2013-08-28 | 2018-06-26 | Intelligrated Headquarters, Llc | Carton unloader with self-aligning interface |
JP2015090431A (ja) * | 2013-11-06 | 2015-05-11 | キヤノン株式会社 | 表示装置 |
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US9396686B2 (en) | 2016-07-19 |
US20150206482A1 (en) | 2015-07-23 |
JPWO2013102997A1 (ja) | 2015-05-11 |
JP6004495B2 (ja) | 2016-10-12 |
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