WO2017152613A1 - Dispositif de rétro-éclairage et procédé de commande correspondant - Google Patents

Dispositif de rétro-éclairage et procédé de commande correspondant Download PDF

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Publication number
WO2017152613A1
WO2017152613A1 PCT/CN2016/099174 CN2016099174W WO2017152613A1 WO 2017152613 A1 WO2017152613 A1 WO 2017152613A1 CN 2016099174 W CN2016099174 W CN 2016099174W WO 2017152613 A1 WO2017152613 A1 WO 2017152613A1
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WO
WIPO (PCT)
Prior art keywords
light
optical fiber
light source
backlight device
fiber
Prior art date
Application number
PCT/CN2016/099174
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English (en)
Chinese (zh)
Inventor
宁超
曹谦
苏文华
姚键
潘柏宇
王冀
Original Assignee
合一智能科技（深圳）有限公司
Priority date (The priority date 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 date listed.)
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Application filed by 合一智能科技（深圳）有限公司 filed Critical 合一智能科技（深圳）有限公司
Publication of WO2017152613A1 publication Critical patent/WO2017152613A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • 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
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/10—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of the optical fibres type

Definitions

  • the present invention relates to the field of display devices, and in particular, to a backlight device and a control method thereof.
  • the direct type backlight device converts the point light source at the bottom of the screen into a surface light source
  • the side-in type backlight device converts the line light source on the side of the screen into a surface light source.
  • the brightness of the periphery of the screen is generally dark.
  • the brightness of the edge of the screen where the line source is not normally placed is relatively dark. In some cases, the darkness of the edge of the screen affects the display, so you need to increase the display brightness. In some other cases, you may want the edge of the screen to be darker, so you need to reduce the display brightness.
  • the backlight device of the prior art does not flexibly control the display brightness of the edge of the screen as needed.
  • the present invention provides a backlight device and a control method thereof, which can control the display brightness of the edge of the screen according to the need for display brightness in different situations.
  • a backlight device comprising: a light source a component, an optical coupling component, an optical fiber, and a point source, the fiber being located adjacent an edge of the optical coupling component; the light of the point source being capable of illuminating an end of the fiber, a portion of the light passing through a side of the fiber
  • the wall emits light; the light emitted by the light source assembly and the sidewall of the fiber is converted into planar light via the light coupling assembly.
  • the light source component is located on one side or opposite sides of the light coupling component, and the optical fiber is disposed on at least one of the light coupling component except the side of the light source component. Near the edge of the side.
  • the light source assembly is located below the light coupling assembly, and the optical fiber is disposed adjacent at least one of the four edges of the light coupling assembly.
  • one end of each of the optical fibers is provided with one of the point sources.
  • the control method includes: illuminating the point light source to illuminate a corresponding optical fiber when it is required to increase edge display brightness Therefore, the display brightness of the edge where the corresponding fiber is located is increased.
  • control method further includes: controlling the point light source to cause an optical fiber at an edge near the first region in the display screen to emit light, and the optical fiber at an edge near the second region No light is emitted, wherein the display brightness of the first area is higher than the display brightness of the second area.
  • the optical fiber is disposed near the edge of the optical coupling component and is illuminated by the point light source.
  • the optical fiber is combined with the light source component to provide a backlight source for the backlight device, thereby enhancing the light.
  • the illumination adjustment capability of the edge of the coupling component is such that the backlight device according to an embodiment of the present invention can flexibly control the display brightness of the edge of the screen as needed.
  • FIG. 1 shows a front view of a backlight device according to an example of an embodiment of the present invention.
  • Figure 4b shows a schematic diagram of the optical transmission principle of a side wall illuminated fiber.
  • 1-optical coupling component 2-light source component, 3-fiber, 31-first fiber section, 32-second fiber section, 4-point source, 5-core, 6-cladding
  • FIG. 1 shows a front view of a backlight device in accordance with an embodiment of the present invention.
  • the backlight device mainly comprises: a light source component 2, an optical coupling component 1, an optical fiber 3 and a point light source 4.
  • the optical fiber 3 is located near the edge of the optical coupling component 1; the light of the point light source 4 can illuminate the end of the optical fiber 3.
  • a part of the light is emitted via the side wall of the optical fiber 3; the light emitted from the light source assembly 2 and the side wall of the optical fiber 3 can be converted into planar light via the optical coupling assembly 1.
  • the optical fiber 3 capable of emitting light from the side wall is disposed near the edge of the optical coupling component 1 and is illuminated by the point light source 4, and the optical fiber 3 is combined with the light source assembly 1 to provide a backlight source for the backlight device.
  • the illumination adjustment capability to the edge of the optical coupling unit 1 is enhanced, so that the backlight device according to the embodiment of the present invention can flexibly control the display brightness of the screen edge as needed.
  • the light source assembly 2 provides a light source for the backlight device, which may include a light source, a light source reflecting member, a light source protecting member, and the like.
  • the type of the light source can be selected as needed, and for example, a light emitting diode (LED), a cold cathode tube fluorescent lamp (CCFL), or an electroluminescence (EL) can be used.
  • the light emitted by the light source assembly 2 may be point light or linear light.
  • the optical fiber may include a first fiber portion 31 and a second fiber portion 32, the first fiber portion 31 being a conventional fiber, and the second fiber portion 32 being a specially treated or fabricated sidewall that can emit light.
  • the fiber, the light of the point source 4 can be irradiated to the end of the first fiber portion 31 and transmitted to the second fiber portion 32 via the first fiber portion 31, and a portion of the light transmitted to the second fiber portion 32 via the second fiber portion 32.
  • the sidewalls are emitted outside the fiber.
  • the second optical fiber 32 portion may be a side optical fiber, for example, a solid core side optical fiber or a liquid core side optical fiber.
  • the light source assembly 2 may be located on one side or opposite sides of the optical coupling assembly 1 in this manner, commonly referred to as a side-lit backlight device, as shown in FIGS. 1 and 2.
  • the light source assembly 2 can be a linear light source assembly, for example the light source can be a cold cathode tube fluorescent lamp (CCFL).
  • the optical fiber 3 may be disposed near an edge of at least one side of the optical coupling assembly 1 other than the side where the light source assembly is located.
  • the optical fiber 3 may be disposed near the edge of the three sides other than the side where the light coupling component 1 is located, and FIG.
  • FIG. 1 is a front view of the backlight device in this case.
  • 2 is a schematic diagram of the effect of the backlight device.
  • the light source unit 2 is located on opposite sides of the light coupling unit 1, the optical fibers 3 may be disposed near the edges of the opposite sides other than the side where the light coupling unit 1 is located.
  • the light source assembly 2 can be located below the light coupling assembly 1, which is generally referred to as a direct type backlight device, as shown in FIG.
  • FIG. 3 illustrates a cross-sectional view of a backlight device according to another example of an embodiment of the present invention.
  • the same components in Fig. 3 as those in Fig. 1 have the same functions, and a detailed description of these components will be omitted for the sake of brevity.
  • the main difference between the backlight device shown in FIG. 3 and the backlight device shown in FIG. 1 is that both the light source assembly 2 and the optical coupling assembly 1 are The relative positional relationship is different.
  • the light source assembly 2 can be a point light source assembly, for example the light source can be a light emitting diode (LED).
  • the optical fiber 3 may be disposed near an edge of at least one of the four sides of the optical coupling assembly 1. 3 shows a cross-sectional view of a direct type backlight device in which the optical fibers 3 are disposed near edges of opposite sides of the light coupling assembly 1, wherein the point source is not shown. The optical fibers 3 may also be disposed near the edges of the four sides of the optical coupling assembly 1.
  • Another embodiment of the present invention also provides a method of controlling a backlight device. This control method can be used to control the backlight device described in Embodiment 1.
  • control method may further include turning off the point light source 4 so that the corresponding optical fiber 3 does not emit light, in order to reduce the brightness of the edge display, thereby lowering the display brightness of the edge where the corresponding optical fiber 3 is located.
  • the edge display it may be necessary to reduce the brightness of the edge display.
  • many 4K or 1080P resolution TVs in the existing market usually set the replay rate to 100% in order to display the HD source in a point-to-point manner.
  • low-resolution sources are displayed, especially when some VCDs are produced in the early stage, which will show the edges of the screen, and these impurities will affect the viewer.
  • Visual effects so it is necessary to reduce the display brightness of the edges to weaken the display of the matte edges.
  • the point source can be turned off so that the corresponding fiber does not emit light, so that the display brightness of the edge where the corresponding fiber is located is lowered.
  • the backlight device of the present invention can also cooperate with a local backlighting function to flexibly control the display brightness of the screen edge according to requirements, so that the overall brightness of the screen is displayed.
  • the brightness of the picture is coordinated to enhance the display.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)

Abstract

L'invention concerne un dispositif de rétro-éclairage et un procédé de commande correspondant. Le dispositif de rétro-éclairage comprend : un composant de source de lumière (2), un composant de couplage optique (1), des fibres optiques (3) et des sources d'éclairage ponctuel (4). Les fibres optiques (3) sont situées à proximité des bords du composant de couplage optique (1). La lumière provenant des sources d'éclairage ponctuel (4) peut irradier l'extrémité arrière de chaque fibre optique (3), une partie de la lumière étant émise par les parois latérales des fibres optiques (3). La lumière émise par le composant de source de lumière (2) et les parois latérales des fibres optiques (3) est convertie en lumière plane au moyen du composant de couplage optique (1). Par la disposition des fibres optiques (3), dont les parois latérales peuvent émettre de la lumière, près des bords du composant de couplage optique (1), et l'irradiation du composant de couplage optique (1) au moyen des sources d'éclairage ponctuel (4) pour l'émission de lumière, les fibres optiques (3) et le composant de source de lumière (2) sont combinés pour fournir une source de rétro-éclairage pour le dispositif de rétro-éclairage. De cette manière, la capacité de réglage de l'éclairage sur les bords du composant de couplage optique (1) est améliorée, de sorte que le dispositif de rétro-éclairage peut commander de manière flexible la luminosité d'affichage des bords d'un écran selon les exigences.
PCT/CN2016/099174 2016-03-07 2016-09-18 Dispositif de rétro-éclairage et procédé de commande correspondant WO2017152613A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610128236.2 2016-03-07
CN201610128236.2A CN105736963A (zh) 2016-03-07 2016-03-07 背光装置及其控制方法

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WO2017152613A1 true WO2017152613A1 (fr) 2017-09-14

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WO (1) WO2017152613A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105736963A (zh) * 2016-03-07 2016-07-06 合一智能科技（深圳）有限公司 背光装置及其控制方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4936659A (en) * 1989-01-26 1990-06-26 Rockwell International Corporation Liquid crystal display brightness enhancer
CN101216632A (zh) * 2007-12-29 2008-07-09 上海广电光电子有限公司 侧光式背光模组
CN102884365A (zh) * 2010-12-16 2013-01-16 松下电器产业株式会社 背光装置以及液晶显示装置
CN203337958U (zh) * 2013-07-26 2013-12-11 京东方科技集团股份有限公司 背光模组及显示装置
CN104779246A (zh) * 2014-01-13 2015-07-15 新科实业有限公司 发光组件、背光装置及其制造方法
CN105736963A (zh) * 2016-03-07 2016-07-06 合一智能科技（深圳）有限公司 背光装置及其控制方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003195297A (ja) * 2001-12-25 2003-07-09 Sharp Corp 液晶表示装置のバックライトユニット
CN202452315U (zh) * 2012-03-16 2012-09-26 京东方科技集团股份有限公司 背光模组及显示装置
CN103994366B (zh) * 2014-05-04 2016-06-15 北京京东方视讯科技有限公司 一种直下式背光模组和显示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4936659A (en) * 1989-01-26 1990-06-26 Rockwell International Corporation Liquid crystal display brightness enhancer
CN101216632A (zh) * 2007-12-29 2008-07-09 上海广电光电子有限公司 侧光式背光模组
CN102884365A (zh) * 2010-12-16 2013-01-16 松下电器产业株式会社 背光装置以及液晶显示装置
CN203337958U (zh) * 2013-07-26 2013-12-11 京东方科技集团股份有限公司 背光模组及显示装置
CN104779246A (zh) * 2014-01-13 2015-07-15 新科实业有限公司 发光组件、背光装置及其制造方法
CN105736963A (zh) * 2016-03-07 2016-07-06 合一智能科技（深圳）有限公司 背光装置及其控制方法

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