JP6596677B2 - 映像表示装置 - Google Patents
映像表示装置 Download PDFInfo
- Publication number
- JP6596677B2 JP6596677B2 JP2017537542A JP2017537542A JP6596677B2 JP 6596677 B2 JP6596677 B2 JP 6596677B2 JP 2017537542 A JP2017537542 A JP 2017537542A JP 2017537542 A JP2017537542 A JP 2017537542A JP 6596677 B2 JP6596677 B2 JP 6596677B2
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- JP
- Japan
- Prior art keywords
- light source
- support member
- display device
- video display
- display panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Images
Classifications
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- 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
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
- G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
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- 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
- G09G3/36—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 using liquid crystals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
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- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
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- 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
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- 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
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
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- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- Computer Hardware Design (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
- Human Computer Interaction (AREA)
- Planar Illumination Modules (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
本願発明者は、従来の映像表示装置に以下の問題が生じることを見出した。
以下、図1〜図11を参照しながら実施の形態1における映像表示装置1について説明する。なお、本実施の形態では、図面にX軸、Y軸、Z軸の3軸を示し、表示パネルの長辺に平行な方向(図1の横方向)の軸をX軸、表示パネルの短辺に平行な方向(図1の縦方向)の軸をY軸、X軸Y軸の双方に直交する方向(映像表示装置1の前後方向に平行な方向)の軸をZ軸とする。しかし、これらの軸は便宜的に示したものに過ぎず、何ら本開示を限定するものではない。
実施の形態1における映像表示装置1は、表示パネルとしての液晶表示パネルと、その表示パネルを背面から照明するための光源基板と、を備える液晶表示装置である。映像表示装置1は、映像表示装置の一例である。光源基板には、各々が表示パネルの互いに異なる領域に対応して設けられた複数の光源と、複数の光源の各々を、制御信号によって表される明るさ(映像の対応領域内の明るさ)に応じた輝度で発光するように駆動(調光)するドライバ素子と、が搭載される。なお、映像の対応領域内の明るさとは、1つの光源が照明する表示パネルの領域(すなわち、その光源に対応する領域)における映像の明るさ(映像の部分的な明るさ)のことである。
以上のように、本実施の形態において、映像表示装置は、入力される映像信号に基づいて映像を表示する表示パネルと、前面側の主面に複数の光源を有し、表示パネルの背面側に向けて複数の光源が発する光を照射する光源基板と、光源基板の主面上に設けられ、複数の光源のうち互いに隣り合う2つの光源の間を仕切る中空の隔壁が形成された反射シートと、表示パネルと光源基板との間に設けられ、光源基板から照射される光の輝度分布を均一化する光学部材と、光源基板と光学部材との間に設けられ、光学部材を支持する支持部材と、を備える。反射シートは、第1方向に沿って形成された隔壁と第1方向に交差する第2方向に沿って形成された隔壁とが交わる交点部分と、第1方向または第2方向に平行に形成される直線部分と、を有する。そして、支持部材は、当該直線部分に形成される凹部に配置される。
実施の形態1では、支持部材100の壁部110が、隔壁31の延伸方向(直線部分31bの延伸方向)に沿って突出して形成されている構成例を説明した(図7参照)。しかし、本開示に示す支持部材の形状は、何ら図7に示した形状に限定されない。ここでは、支持部材の他の形状例を説明する。支持部材は、例えば、図12に示すような形状であってもよい。
1a 筐体
10 ベースプレート
11,12 貫通孔
11a 第1孔部
11b 第2孔部
20 光源基板
21 光源
22,23 ドライバ素子
24 開口
25 ビス孔
30 反射シート
31 隔壁
31a 交点部分
31b 直線部分
31c 傾斜面
32,33 開口
35 凹部
36 接着テープ
40 フラッタ
41,41A 孔
50 光学シート
60 モールドフレーム
70 表示パネル
71 領域
80 ベゼル
91 接続端子基板
92 信号処理基板
93 電源基板
100,200 支持部材
105,205 軸部
110,210 壁部
120,220 係合部
130,230 板部
140,240 支持面
150,250 端部
210a 傾斜面
D1 第1所定間隔
D2 第2所定間隔
d1,d2 幅
Claims (4)
- 映像信号に基づいて映像を表示する表示パネルと、前記表示パネルの背面側に配置されるベースプレートに取り付けられる複数の光源基板と、を備え、前記光源基板は、前記表示パネル側の面に配置される複数の発光素子と、前記複数の発光素子が取り付けられる面と同じ面に配置され、前記複数の発光素子の各々を駆動する複数のドライバ素子と、を備え、
前記複数の光源基板は、第一方向に沿って配列され、かつ前記第一方向に直交する第二方向に沿って配列され、
前記ベースプレートの背面側に補強梁が設けられ、
前記複数補強梁と前記ベースプレートとの所定位置に、ケーブルを介して電気的に接続するための開口を設け、
前記第一方向に配列される光源基板、および、前記第二方向に配列される光源基板の少なくとも一方は、前記開口を通してカスケード接続されている、映像表示装置。 - 前記複数の発光素子の各々は、前記光源基板における、前記表示パネルの互いに異なる領域のそれぞれに対応した位置に配置され、
前記ドライバ素子は、前記領域に表示される映像の明るさに応じて、前記光源基板上の前記領域に対応する位置に配置される発光素子を調光する、
請求項1に記載の映像表示装置。 - 前記複数の発光素子は、第一方向に沿って第一間隔で配列され、かつ前記第一方向に直交する第二方向に沿って第二間隔で配列されており、
前記ドライバ素子は、前記第一間隔および前記第二間隔の中点、または前記中点の近傍に配置される、
請求項1に記載の映像表示装置。 - 前記発光素子は、複数のLED(Light Emitting Diode)素子を直列に接続して構成されたLEDであり、駆動電圧は10(V)以上、50(V)以下の範囲から選定される、
請求項1に記載の映像表示装置。
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