WO2016106903A1 - 一种导光板、液晶面板背光模组及导光板制造装置 - Google Patents

一种导光板、液晶面板背光模组及导光板制造装置 Download PDF

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Publication number
WO2016106903A1
WO2016106903A1 PCT/CN2015/071223 CN2015071223W WO2016106903A1 WO 2016106903 A1 WO2016106903 A1 WO 2016106903A1 CN 2015071223 W CN2015071223 W CN 2015071223W WO 2016106903 A1 WO2016106903 A1 WO 2016106903A1
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WIPO (PCT)
Prior art keywords
light guide
guide plate
light
columnar
backlight module
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.)
Ceased
Application number
PCT/CN2015/071223
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English (en)
French (fr)
Inventor
郑颖博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US14/417,822 priority Critical patent/US10132981B2/en
Publication of WO2016106903A1 publication Critical patent/WO2016106903A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G—PHYSICS
    • G02—OPTICS
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G02—OPTICS
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0065—Manufacturing aspects; Material aspects

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular to a light guide plate, a liquid crystal display backlight module, and a light guide plate manufacturing device.
  • Liquid Crystal Display is the most commonly used mobile phone display screen.
  • Liquid crystal display technology has evolved from black and white screens to color screens and from twisted nematic LCDs (TN-LCDs) to thin film transistor LCDs (TFT-LCDs).
  • TN-LCDs twisted nematic LCDs
  • TFT-LCDs thin film transistor LCDs
  • FIG. 1a and FIG. 1b respectively show a schematic structural view of a conventional backlight module and a light guiding effect diagram of the light guide plate.
  • the existing backlight module adopts the form of a side light source, that is, the LED as a light source is disposed on the side of the light guide plate.
  • the LED When the LED is lit, the light emitted by the LED enters the light guide plate from the side of the light guide plate.
  • the light guiding effect diagram of the light guide plate shown in Fig. 1b that the light incident into the light guide plate exhibits a divergent form. This indicates that the existing light guide plate cannot effectively beam the incident light, which makes the light in the light guide plate susceptible to crosstalk.
  • an embodiment of the present invention first provides a light guide plate including first and second surfaces parallel to each other.
  • the first surface is formed with columnar protrusions parallel to each other, and the second surface is formed with a light guiding port.
  • the second surface is also formed with columnar projections parallel to each other, and the light guiding opening is formed on the columnar projection of the second surface.
  • adjacent columnar projections are spaced apart by a predetermined distance.
  • the light guiding openings are non-uniformly distributed in a direction parallel to the columnar projections.
  • the further away from the first end of the stud bump the shorter the separation distance between adjacent two light guides on the same stud bump.
  • the present invention also provides a liquid crystal panel backlight module, the backlight module includes a light source circuit and a light guide plate, and the light source circuit is disposed at a side of the light guide plate, wherein the light guide plate is as described in any one of the above A light guide plate for processing light incident from a side surface and emitting it from the front side.
  • the present invention also provides an apparatus for manufacturing a light guide plate, the apparatus comprising:
  • a melting furnace for melting the raw material of the light guide plate and outputting the same
  • a rolling portion for rolling a light guide plate raw material from the melting furnace to form a light guide plate including first and second faces parallel to each other, the first face being formed with columnar protrusions parallel to each other;
  • a conveying portion for conveying the light guide plate from the rolling portion to the rear end of the production line, the conveying portion including a plurality of elastic rollers arranged side by side to support and convey the light guide plate from the rolling portion.
  • the rolling portion includes a first roller and a second roller that rotate in cooperation with each other, and a protrusion is provided on the first roller and/or the second roller.
  • the projections on the first roller and/or the second roller are circumferentially convex.
  • the device further comprises:
  • the light source circuit in the backlight module can realize independent control of the light emitting unit.
  • the control circuit can illuminate the desired light-emitting unit while extinguishing the unnecessary light-emitting units. Since the light-emitting units do not need to be completely lit, the power consumption of the backlight module is effectively reduced, thereby prolonging the usage time of the power device (such as a mobile phone, etc.).
  • the light source circuit provided by the present invention can also achieve adjustable brightness of the light source.
  • the controllable switch passes Adjust the duty cycle of the control signal to adjust the duration of time that the LED is lit or extinguished. In a period of time, the longer the LED is lit, the brighter the light source looks. Conversely, the shorter the LED is illuminated for a period of time, the darker the light source looks. This also achieves the adjustment of the brightness of the light source.
  • the surface of the light guide plate provided by the present invention is provided with columnar protrusions parallel to each other, the columnar protrusions can cause the light to be relatively converged when being transmitted in the light guide plate. Therefore, the light guide plate provided by the present invention has a better beam light effect than the existing light guide plate. This also causes the crosstalk of light in the light guide plate to be greatly reduced.
  • the light guide port in the light guide plate provided by the present invention is distributed in a non-uniform distribution. Specifically, in each of the columnar protrusions provided with the light guiding ports, the farther from the first end of the columnar protrusions (ie, the end near the light emitting unit), between the two adjacent light guiding ports of the columnar protrusions The shorter the interval, the denser the distribution of the light guides.
  • the light guide port is densely distributed. In this way, the light emitted from each area of the light guide plate is relatively balanced, thereby ensuring uniformity of light emission on the surface of the light guide plate.
  • 1a is a schematic structural view of a conventional backlight module
  • Figure 1b is an optical path effect diagram of the existing light guide plate
  • FIG. 2 is a circuit diagram of a light source circuit of a conventional liquid crystal panel backlight module
  • FIG. 3 is a circuit diagram of a light source circuit of a backlight module according to an embodiment of the invention.
  • 4 and 5 are a front view and a top view, respectively, of a light guide plate according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural view of a light guide plate manufacturing apparatus according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a backlight module according to an embodiment of the present invention.
  • FIG. 8 is a diagram showing an effect of an optical path in a light guide plate when a light emitting unit is lit according to an embodiment of the present invention
  • FIG. 9 is a diagram showing an effect of an optical path in a light guide plate when a plurality of light emitting units are lit according to an embodiment of the present invention.
  • Figure 10 is a light path diagram of a light guide plate in accordance with one embodiment of the present invention.
  • FIG. 11 is a schematic view showing the arrangement of light guiding ports in a light guide plate according to an embodiment of the invention.
  • 12 and 13 are a front view and a plan view, respectively, of a light guide plate according to another embodiment of the present invention.
  • FIG. 14 is a schematic structural view of a light guide plate according to still another embodiment of the present invention.
  • Figure 15 is a schematic view showing the structure of a light guide plate according to still another embodiment of the present invention.
  • FIG. 2 shows a circuit diagram of the light source circuit in the existing backlight module.
  • the existing light source circuit is formed by connecting multiple light emitting diode circuits in parallel, wherein each of the light emitting diode circuits is formed by connecting a plurality of light emitting diodes in series.
  • the structure of the light source circuit makes the liquid crystal display of the mobile phone operate, no matter how the brightness and darkness of the picture displayed by the display and the demand change, the light emitting diodes in the light source circuit are all in the state of being lit, that is, the light emitting circuit Energy consumption continues to be maintained at 100%.
  • the structure of the existing backlight module makes the energy consumption of the liquid crystal display usually accounts for 60% to 70% of the overall energy consumption of the mobile phone. Due to the limitation of the battery capacity of the mobile phone, the high energy consumption of the liquid crystal display also greatly shortens the standby time of the mobile phone.
  • the embodiment provides a liquid crystal display backlight module capable of independently controlling the lighting state of each light emitting unit, and the backlight module includes a light source circuit and a guide. Light board.
  • FIG. 3 is a circuit diagram showing a light source circuit of the backlight module.
  • the light source circuit provided in this embodiment includes a control circuit 302 and a plurality of light emitting units 301.
  • Each of the light emitting units 301 is connected to a corresponding port of the control circuit 302 to be turned on or off under the control of the control circuit 302.
  • the light emitting unit is disposed on a side of the light guide plate as a side light source of the light guide plate.
  • the light guide plate can process the light incident from the side surface and then emit the light from the front surface of the light guide plate, that is, convert the side light source into a surface light source.
  • the first port of each light emitting unit is connected to the first port of the preset power source, and the second port is connected to the corresponding port of the control circuit 302.
  • the backlight module uses a light emitting diode as a light emitting unit.
  • the anode of the LED is connected to the anode of the preset power source (ie, the A port), and the cathode of the LED is connected to the corresponding port of the control circuit 302.
  • control circuit 302 includes a controllable switch including a first port and a plurality of second ports.
  • the first port of the controllable switch is connected to the negative pole of the preset power source (ie, the K port), and each of the second ports is connected to the negative pole of the corresponding LED.
  • the controllable switch When the LED D1 needs to be lit, the controllable switch will turn on the connection between the B1 port and the K port. At this time, the voltage across the LED D1 reaches the operating voltage, thereby emitting light outward. Since the controllable switch can independently control the connection between the ports connected to the LED (ie, the B1 port to the Bn port) and the K port, the controllable switch can realize the independent state of each LED. control. This means that the controllable switch can control one or more of the LEDs to be lit or extinguished simultaneously.
  • the light source circuit provided by the embodiment can realize independent control of the light emitting unit.
  • the control circuit can illuminate the desired light-emitting unit while extinguishing the unnecessary light-emitting unit. Since the light-emitting units do not need to be all lit, the energy consumption of the backlight module is effectively reduced.
  • the energy consumption of the light source circuit provided by the embodiment can be reduced by about 40%. The reduction in energy consumption of the light source circuit can also effectively extend the length of use of the powered device (such as a mobile phone).
  • the light source circuit provided by the embodiment can also adjust the brightness of the light source.
  • the controllable switch 202 can adjust the duration of the LED to be turned on or off by adjusting the duty ratio of the control signal. In a period of time, the longer the LED is lit, the brighter the light source looks; The shorter the duration of illumination of the LED, the darker the source will look. This also achieves the adjustment of the brightness of the light source.
  • the light emitting unit and/or the control circuit may also be implemented by other reasonable circuit forms, and the present invention is not limited thereto.
  • the control circuit is implemented by using an FPGA circuit, which enables the switch circuit to have a faster response speed, thereby making the control circuit more timely and accurate to control the light-emitting unit.
  • the embodiment further provides a light guide plate capable of effectively functioning as a beam.
  • 4 and 5 respectively show a front view and a top view of the light guide plate provided by the embodiment.
  • the light guide plate provided in this embodiment includes a first surface 401 and a second surface 402 which are parallel to each other, and the first surface 401 and the second surface 402 are provided with parallel columnar protrusions. From 403, adjacent columnar protrusions are spaced apart by a predetermined distance.
  • Fig. 6 shows an apparatus for manufacturing a light guide plate as shown in Figs. 4 and 5 provided by the present embodiment.
  • the material of the light guide plate is engineering plastic.
  • the melting furnace first melts the engineering plastic into a liquid state, and then transports the liquid engineering plastic to the rolling portion through the T-shaped head. There is a certain distance between the T-shaped head and the rolled portion. The liquid engineering plastic is slowly cooled during the descending process from the T-shaped head, and the engineering plastic is not completely cooled when it reaches the rolling portion, which is advantageous for roll forming.
  • the rolling portion of the light guide plate manufacturing apparatus includes a first roller and a second roller which are rotated in cooperation with each other.
  • the first roller and the second roller are both provided with protrusions.
  • the first roller and the second roller are capable of rolling an incompletely cooled engineering plastic from the T-shaped head to form a light guide plate structure as shown in FIGS. 4 and 5.
  • the projections on the roller can be a plurality of circumferential projections disposed on the surface of the roller shaft, or a plurality of axial cylindrical projections disposed on the surface of the roller shaft.
  • the protrusions on the first roller and the second roller are circumferentially convex. Since the roller having the circumferential projection suppresses the engineering plastic, the convex space and the roller shaft are not formed into a closed space, so that the air in the engineering plastic can be efficiently discharged.
  • the structure of the roller is also such that the structure of the light guide plate obtained by the rolling is more uniform, and the impurities inside the light guide plate are less, thereby ensuring good light guiding performance of the light guide plate.
  • the formed light guide plate is transferred to the conveying portion, so that the light guiding plate from the rolling portion is conveyed to the rear end of the production line by the conveying portion. Since the light guide plate from the rolling portion is not completely cooled, the process of transmitting the light guide plate on the transmission is also a process of cooling the light guide plate.
  • the conveying portion includes a plurality of elastic rollers arranged side by side to support and convey the light guide plate from the rolling portion.
  • the defect detecting portion in the manufacturing device also performs defect inspection on the light guide plate to ensure structural integrity and reliability of the light guide plate. Further, since the light guide plate produced has columnar projections, this causes easy accumulation of ash between the columnar projections. Therefore, the light guide plate manufacturing apparatus provided in the embodiment further performs a film coating process on the light guide plate after the defect inspection, so that the upper and lower surfaces of the light guide plate are respectively coated with a protective film.
  • the protective film not only can effectively ensure the cleanliness and dust-free degree of the light guide plate, but also protect the surface of the light guide plate from damage.
  • the protective film coated on the light guide plate is a film. Of course, in other embodiments of the present invention, other reasonable forms of protective film may also be used to coat the light guide plate, and the present invention is not limited thereto.
  • the present embodiment places the light emitting unit on the side of the light guide plate in the manner shown in FIG. 7, and turns on the power of the light emitting unit to make it normal.
  • jobs. 8 and 9 respectively show optical paths in the light guide plate when one light emitting unit and a plurality of light emitting units are turned on.
  • the columnar protrusions provided by the light guide plate provided in the embodiment can make the light in a relatively converging state when the light is transmitted in the light guide plate, compared with the existing guide.
  • the light guide plate provided in this embodiment has a better beam light effect. This also causes the crosstalk of light in the light guide plate to be greatly reduced.
  • the light guide plate Since one of the functions of the light guide plate is to convert the side light source into a surface light source, it is also necessary to emit light from the light guide plate from the surface of the light guide plate.
  • the light in the light guide plate is transmitted in the form of total reflection. In order to enable the light to be emitted from the surface of the light guide plate, it is necessary to damage the total reflection structure of the light guide plate.
  • the light guide plate provided in this embodiment breaks the total reflection structure of the light guide plate by providing a light guide port on the columnar protrusion. In this way, part of the light in the light guide plate can be emitted from the light guide port, thereby realizing the function of converting the side light source into a surface light source.
  • the light guiding ports are all disposed in the columnar protrusions on the second surface of the light guiding plate, thereby ensuring that light is not emitted from the first surface of the light guiding plate, thereby ensuring The utilization of light emitted by the light source circuit improves the brightness of the backlight module.
  • the light emitting unit Since the light emitting unit is disposed on one side of the light guide plate, light incident from the light guide plate is emitted from the respective light guide ports. Therefore, this will result in less light being emitted from the light guiding port which is farther from the light emitting unit.
  • the light distribution port of the light guide plate provided in this embodiment is distributed in a non-uniformity of the light guide port. Specifically, in each of the columnar protrusions provided with the light guiding ports, the farther from the first end of the columnar protrusions (ie, the end near the light emitting unit), between the two adjacent light guiding ports of the columnar protrusions The shorter the interval, the denser the distribution of the light guides.
  • the light guides near the light-emitting unit emit more light, but the light guides are sparsely distributed near the light-emitting unit; and the light guides that are far from the light-reflecting unit emit less light, but are far away from the light-emitting unit.
  • the light guide port is densely distributed. In this way, the light emitted from each area of the light guide plate is relatively balanced, thereby ensuring uniformity of light emission on the surface of the light guide plate.
  • the light guide plate may also adopt a structure as shown in FIGS. 12 and 13.
  • 12 and 13 respectively show a front view and a plan view of the light guide plate.
  • the light guide plate can also be regarded as being arranged by a plurality of cylinders arranged side by side.
  • the light guide plate may also adopt a structure as shown in FIG.
  • the light guide plate compared to the light guide plate shown in FIG. 4, the light guide plate is formed with only columnar protrusions on the first surface, and the second surface is still a planar structure.
  • the light guiding ports are each disposed on the second surface. This is because the second surface is a planar structure, and it is easier to form a light guiding port on the planar structure (for example, wet etching or the like).
  • the light guide port may also be disposed on the columnar protrusion of the first surface in the case where the process and cost permit, and the present invention is not limited thereto. Accordingly, of the first roller and the second roller included in the rolling portion of the apparatus for producing the duct plate, only one of them is provided with a projection.
  • the light guide plate may adopt the structure as described in FIG.
  • the light guide plate shown in FIG. 15 has the same structure as the light guide plate shown in FIG. 14 except that there is no space between the adjacent columnar protrusions, and details are not described herein again.
  • the light source circuit in the backlight module provided by the present invention can realize independent control of the light emitting unit.
  • the control circuit can illuminate the desired light-emitting unit while extinguishing the unnecessary light-emitting units. Since the light-emitting units do not need to be completely lit, the power consumption of the backlight module is effectively reduced, thereby prolonging the use time of the power device.
  • the light source circuit provided by the present invention can also achieve adjustable brightness of the light source.
  • the controllable switch can adjust the duration of the LED to be turned on or off by adjusting the duty ratio of the control signal. In a period of time, the longer the LED is lit, the brighter the light source appears; otherwise, the light is illuminated for a period of time. The shorter the duration the diode is lit, the darker the light source will look. This also achieves the adjustment of the brightness of the light source.
  • the surface of the light guide plate provided by the present invention is provided with columnar protrusions parallel to each other, the columnar protrusions can cause the light to be relatively converged when being transmitted in the light guide plate. Therefore, the light guide plate provided by the present invention has a better beam light effect than the existing light guide plate. This also causes the crosstalk of light in the light guide plate to be greatly reduced.
  • the light guide port in the light guide plate provided by the present invention is distributed in a non-uniform distribution of the light guide port. Specifically, in each of the columnar protrusions provided with the light guiding ports, the farther from the first end of the columnar protrusions (ie, the end near the light emitting unit), between the two adjacent light guiding ports of the columnar protrusions The shorter the interval, the denser the distribution of the light guides.
  • the light guides near the light-emitting unit emit more light, but the light guides are sparsely distributed near the light-emitting unit; and the light guides that are far from the light-reflecting unit emit less light, but are far away from the light-emitting unit.
  • the light guide port is densely distributed. In this way, the light emitted from each area of the light guide plate is relatively balanced, thereby ensuring uniformity of light emission on the surface of the light guide plate.

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Abstract

一种导光板、液晶显示器背光模组及导光板制造装置。导光板包括相互平行的第一表面（401）和第二表面（402）。第一表面（401）形成有相互平行的柱状凸起（403）。第二表面（402）形成有导光口。该导光板具有更好地束光效果，使得导光板内光线的串扰得到大幅降低。

Description

一种导光板、液晶面板背光模组及导光板制造装置
相关技术的交叉引用
本申请要求享有2014年12月31日提交的名称为：“一种导光板、液晶显示器背光模组及导光板制造装置”的中国专利申请CN 201410855642.X的优先权，其全部内容通过引用并入本文中。
技术领域
本发明涉及液晶显示技术领域，具体地说，涉及一种导光板、液晶显示器背光模组及导光板制造装置。
背景技术
随着移动技术的发展，手机已成为人们日常生活中必不可少的通讯工具。目前液晶显示器(Liquid Crystal Display，简称为LCD)是最为常用的手机显示屏幕。液晶显示技术经历了从黑白屏幕到彩色屏幕以及从扭曲向列相LCD(TN-LCD)到薄膜晶体管LCD(TFT-LCD)的发展。
图1a和图1b分别示出了现有的背光模组的结构示意图和导光板的导光效果图。从图1a中可以看出，现有的背光模组采用了侧光源的形式，即作为光源的LED设置在导光板的侧面。当LED点亮时，LED发出的光线由导光板的侧面进入到导光板中。从图1b所示出的导光板的导光效果图中可以看出，射入到导光板内的光线呈现发散的形态。这表明现有的导光板无法有效地对射入的光线起到束光作用，这也就使得导光板内光线容易发生串扰。
基于上述情况，亟需一种能够有效避免内部光线发生串扰的导光板。
发明内容
本发明所要解决的问题是如何避免导管板内部光线发生串扰。为解决上述问题，本发明的实施例首先提供了一种导光板，所述导光板包括相互平行的第一表面和第二表面，所 述第一表面形成有相互平行的柱状凸起，所述第二表面形成有导光口。
根据本发明的一个实施例，所述第二表面也形成有相互平行的柱状凸起，所述导光口形成在第二表面的柱状凸起上。
根据本发明的一个实施例，相邻的柱状凸起之间间隔预设距离。
根据本发明的一个实施例，所述导光口沿平行于柱状凸起的方向非均匀分布。
根据本发明的一个实施例，距离所述柱状凸起的第一端越远，同一柱状凸起上的相邻的两个导光口之间的间隔距离越短。
本发明还提供了一种液晶面板背光模组，所述背光模组包括光源电路和导光板，所述光源电路设置在导光板的侧面，其中，所述导光板为如上任一项所述的导光板，所述导光板用于将从侧面射入的光线进行处理后由正面射出。
本发明还提供了一种制造导光板的装置，所述装置包括：
熔化炉，其用于将导光板原材料融化后输出；
辊压部，其用于对来自熔化炉的导光板原材料进行辊压，形成包括相互平行的第一面和第二面的导光板，所述第一面形成有相互平行的柱状凸起；
传送部，其用于将来自辊压部的导光板传送到生产线后端，所述传送部包括多个并排排列的弹性滚轮，以支撑和输送来自辊压部的导光板。
根据本发明的一个实施例，所述辊压部包括彼此配合转动的第一辊压轮和第二辊压轮，在第一辊压轮和/或第二辊压轮上设置有凸起。
根据本发明的一个实施例，所述第一辊压轮和/或第二辊压轮上的凸起为周向凸起。
根据本发明的一个实施例，所述装置还包括：
覆膜部，其用于对来自传送部的导光板进行覆膜处理，以在导光板上形成保护膜。
相较于现有背光模组的光源电路，本发明所提供的背光模组中的光源电路能够实现对发光单元的独立控制。这样，当根据液晶显示器的显示需要不必点亮全部发光单元时，控制电路能够将需要的发光单元点亮，同时将不需要的发光单元熄灭。由于发光单元不需要全部处于点亮状态，因此也就有效降低了背光模组的能耗，从而延长了用电装置(例如手机等)的使用时长。
此外，本发明所提供的光源电路还能够实现光源亮度的可调。具体地，可控开关通过 调节控制信号的占空比，可以调节发光二极管点亮或熄灭的时长。而在一段时间内，发光二极管点亮的时长越长，那么光源看上去也就越亮；反之，在一段时间内，发光二极管点亮的时长越短，那么光源看上去也就越暗。这样也就实现了对光源亮度的调节。
由于本发明所提供的导光板的表面设置有相互平行的柱状凸起，而柱状凸起能够使得光线在导光板内传输时呈现相对收束的状态。因此，相较于现有的导光板，本发明所提供的导光板具有更好地束光效果。这也就使得导光板内光线的串扰得到大幅降低。
为了保证导光板表面的出光均匀性，本发明所提供的导光板中导光口的分布方式为非均匀性分布。具体地，在各个设有导光口的柱状凸起中，距离柱状凸起的第一端(即靠近发光单元的一端)越远，该柱状凸起中相邻的两个导光口之间的间隔越短，即导光口的分布越密集。
靠近发光单元的各个导光口射出的光线较多，但靠近发光单元的位置处导光口分布较为稀疏；而远离发光单元的各个导光口射出的光线较少，但远离发光单元的位置处导光口分布较为密集。这样也就使得导光板各个区域射出的光线较为均衡，从而保证了导光板表面的出光均匀性。
本发明的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。本发明的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要的附图做简单的介绍：
图1a是现有的背光模组的结构示意图；
图1b是现有导光板内的光路效果图；
图2是现有的液晶面板背光模组的光源电路的电路示意图；
图3是根据本发明一个实施例的背光模组的光源电路的电路示意图；
图4和图5分别是根据本发明一个实施例的导光板的主视图和俯视图；
图6是根据本发明一个实施例的导光板制造装置的结构示意图；
图7是根据本发明一个实施例的背光模组的结构示意图；
图8是根据本发明一个实施例的一个发光单元点亮时导光板内的光路效果图；
图9是根据本发明一个实施例的多个发光单元点亮时导光板内的光路效果图；
图10是根据本发明一个实施例的导光板内的光路图；
图11是根据本发明一个实施例的导光板中的导光口的排列示意图；
图12和图13分别是根据本发明另一个实施例的导光板的主视图和俯视图；
图14是根据本发明又一个实施例的导光板的结构示意图；
图15是根据本发明再一个实施例的导光板的结构示意图。
具体实施方式
以下将结合附图及实施例来详细说明本发明的实施方式，借此对本发明如何应用技术手段来解决技术问题，并达成技术效果的实现过程能充分理解并据以实施。需要说明的是，只要不构成冲突，本发明中的各个实施例以及各实施例中的各个特征可以相互结合，所形成的技术方案均在本发明的保护范围之内。
同时，在以下说明中，出于解释的目的而阐述了许多具体细节，以提供对本发明实施例的彻底理解。然而，对本领域的技术人员来说显而易见的是，本发明可以不用这里的具体细节或者所描述的特定方式来实施。
伴随着液晶显示技术的发展，应用在手机中的液晶显示器的尺寸也在不断变大，这也就导致了液晶显示器的能耗也随之越来越高。背光模组是液晶显示器的主要耗电单元，图2示出了现有的背光模组中光源电路的电路示意图。如图2所示，现有的光源电路是由多路发光二极管电路并联而成，其中，每一路发光二极管电路又由多个发光二极管串联而成。而光源电路的这种结构使得手机的液晶显示器在工作时，无论显示器所表现的画面的亮暗分布及需求如何变化，光源电路中的发光二极管均处在全部点亮的状态，即发光电路的能耗持续维持在100％。
现有背光模组的这种结构使得液晶显示屏的能耗通常占到了手机整体能耗的60％～70％。由于手机电池容量的限制，液晶显示屏的这种高能耗特性也极大缩短了手机的待机时长。
为了解决现有的液晶显示器背光模组能耗过高的问题，本实施例提供了一种能够独立控制各个发光单元的亮灭状态的液晶显示器背光模组，该背光模组包括光源电路和导光板。
图3示出了该背光模组的光源电路的电路示意图。
如图3所示，本实施例所提供的光源电路包括控制电路302和多个发光单元301。其中，各个发光单元301与控制电路302的相应端口连接，以在控制电路302的控制下点亮或熄灭。本实施例中，发光单元设置在导光板的侧面，作为导光板的侧光源。导光板能够将从侧面射入的光线进行处理后由导光板的正面射出，即将侧光源转换为面光源。
本实施例中，各个发光单元的第一端口与预设电源的第一端口连接，第二端口与控制电路302的相应端口连接。如图3所示，本实施例所提供的背光模组中采用发光二极管作为发光单元。其中，发光二极管的正极与预设电源的正极(即A端口)连接，发光二极管的负极与控制电路302的相应端口连接。
本实施例中，控制电路302包括可控开关，该可控开关包括第一端口和多个第二端口。其中，可控开关的第一端口与预设电源的负极(即K端口)连接，各个第二端口与相应的发光二极管的负极连接。
当需要点亮发光二极管D1时，可控开关将导通B1端口与K端口之间的连接。此时发光二极管D1两端的电压达到工作电压，从而向外发出光线。由于可控开关能够独立控制与发光二极管关连接的各个端口(即B1端口～Bn端口)与K端口之间连接的通断，因此可控开关也就可以实现对各个发光二极管亮灭状态的独立控制。这也就是说，可控开关可以控制一个或多个发光二极管同时点亮或熄灭。
相较于现有背光模组的光源电路，本实施例所提供的光源电路能够实现对发光单元的独立控制。这样，当根据液晶显示器的显示需求不必点亮全部发光单元时，控制电路能够将需要的发光单元点亮，同时将不需要的发光单元熄灭。由于发光单元不需要全部处于点亮状态，因此也就有效降低了背光模组的能耗。相较于现有的光源电路，本实施例所提供的光源电路的能耗能够降低40％左右。光源电路能耗的降低也能够有效延长用电器件(例如手机)的使用时长。
此外，本实施例所提供的光源电路还能够调节光源亮度。具体地，本实施例中，可控开关202通过调节控制信号的占空比，能够实现对发光二极管点亮或熄灭的时长的调节。而在一段时间内，发光二极管点亮的时长越长，那么光源看上去也就越亮；反之，在一段 时间内，发光二极管点亮的时长越短，那么光源看上去也就越暗。这样也就实现了对光源亮度的调节。
需要说明的是，在本发明的其他实施例中，发光单元和/或控制电路也可以采用其他合理的电路形式来实现，本发明不限于此。例如在本发明的一个实施例中，控制电路采用FPGA电路来实现，FPGA电路能够使得开关电路具有更快的响应速度，从而使得控制电路对发光单元的控制更为及时精确。
现有的导光板无法有效地对射入的光线起到束光作用，从而导致导光板中光线容易发生串扰。为了解决该问题，本实施例还提供了一种能够有效起到束光作用的导光板。图4和图5分别示出了本实施例所提供的导光板的主视图和俯视图。从图4和图5中可以看出，本实施例所提供的导光板包括相互平行的第一表面401和第二表面402，第一表面401和第二表面402上均设置有平行的柱状凸起403，相邻的柱状凸起之间间隔有预设距离。
图6示出了本实施例所提供的用于制造如图4和图5所示的导光板的装置。
本实施例例中，导光板原材料为工程塑胶。在生产的过程中，融化炉首先将工程塑胶融化为液态，随后将液态的工程塑胶通过T形头输送到辊压部。T形头与辊压部之间存在一定距离。液态的工程塑胶从T形头输出后将在下降的过程中慢慢冷却，而当到达辊压部时，工程塑胶并未完全冷却，从而有利于辊压成型。
本实施例中，导光板制造装置的辊压部包括彼此配合转动的第一辊压轮和第二辊压轮。由于需要在导光板的第一表面和第二表面均形成柱状凸起，因此本实施例中，第一辊压轮和第二辊压轮上均设置有凸起。第一辊压轮和第二辊压轮能够对来自T形头的未完全冷却的工程塑胶进行辊压，从而形成如图4和图5所示的导光板结构。
在本发明的不同实施例中，辊压轮上的凸起可以为多个设置在辊压轴表面的周向凸起，也可以为多个设置在辊压轴表面的轴向柱状凸起。本实施例中第一辊压轮和第二辊压轮上的凸起为周向凸起。因为这种具有周向凸起的辊压轮在对工程塑胶进行压制时，不会由凸起与辊压轴形成密闭空间，从而能够有效地排出工程塑胶内的空气。辊压轮的这种结构也就使得辊压得到的导光板的结构更加均匀，导光板内部的杂质更少，从而保证了导光板良好的导光性能。
辊压部完成对工程塑胶的辊压后，会将形成的导光板传输到传送部上，以便由传送部将来自辊压部的导光板向生产线后端输送。由于来自辊压部的导光板并未完全冷却，因此导光板在传输上传输的过程，也是导光板冷却的过程。为了保证导光板在这一过程中不被 损伤，本实施例中，传送部包括多个并排排列的弹性滚轮，以支撑和输送来自辊压部的导光板。
辊压后的导光板在传送部上传输的过程中，该制造装置中的缺陷检测部还会对导光板进行缺陷检查，以确保导光板的结构完整性和可靠性。此外，由于生产得到的导光板具有柱状凸起，这也就导致柱状凸起之间容易积灰。为此，本实施例所提供的导光板制造装置在进行缺陷检查后还会对导光板进行覆膜处理，以在导光板的上下表面分别涂覆上保护膜。该保护膜不但能够有效保证导光板的洁净度和无尘度，而且还能够保护导光板的表面不受损伤。本实施例中，涂覆在导光板上的保护膜为有胶膜。当然，在本发明的其他实施例中，还可以采用其他合理形式的保护膜来对导光板进行涂覆，本发明不限于此。
最后，通过对覆膜后的导光板进行切片处理，即可得到所需尺寸的导光板。
为了更加清楚地呈现图4和图5所示的导光板的束光性能，本实施例按照图7所示的方式，将发光单元放置在导光板的侧面，并打开发光单元的电源使其正常工作。图8和图9分别示出了打开一个发光单元和多个发光单元时导光板内的光路图。
从图8和图9中可以看出，由于本实施例所提供的导光板所设置的柱状凸起能够使得光线在导光板内传输时呈现相对收束的状态，因此相较于现有的导光板，本实施例所提供的导光板具有更好地束光效果。这也就使得导光板内光线的串扰得到大幅降低。
由于导光板的作用之一是将侧光源转换为面光源，所以也就需要使导光板内的光线从导光板表面射出。而导光板内的光线是以全反射的形式传输的，为了能够使光线从导光板表面射出，也就需要破坏导光板的这种全反射结构。
如图10所示，本实施例所提供的导光板通过在柱状凸起上设置导光口，来破坏导光板的全反射结构。这样，导光板内的部分光线便可以由该导光口射出，从而实现了将侧光源转换为面光源的功能。本实施例中，如图11所示，导光口均设置在导光板的第二表面上的柱状凸起中，这样也就保证了光线不会从导光板的第一表面射出，从而保证了光源电路所发出的光线的利用率，提高了背光模组的亮度。
由于发光单元是设置在导光板的一侧，而导光板内射入的光线会从由各个导光口射出。因此这样将导致距离发光单元越远的导光口所射出的光线越少。为了保证导光板表面的出光均匀性，本实施例所提供的导光板中导光口的分布方式为导光口非均匀性分布。具体地，在各个设有导光口的柱状凸起中，距离柱状凸起的第一端(即靠近发光单元的一端)越远，该柱状凸起中相邻的两个导光口之间的间隔越短，即导光口的分布越密集。
靠近发光单元的各个导光口射出的光线较多，但靠近发光单元的位置处导光口分布较为稀疏；而远离反光单元的各个导光口射出的光线较少，但远离发光单元的位置处导光口分布较为密集。这样也就使得导光板各个区域射出的光线较为均衡，从而保证了导光板表面的出光均匀性。
需要说明的是，在本发明的其他实施例中，还可以采用其他合理方式来确保导光板的出光均匀性，本发明不限于此。
在本发明的一个实施例中，导光板也可以采用如图12和图13所示的结构。图12和图13分别示出了该导光板的主视图和俯视图。从这两个图中可以看出，相较于图4和图5所示出的导光板，该导光板中相邻的柱状凸起之间没有间隔，并且第一表面与第二表面处在了同一平面上。该导光板也就可以视为由多个圆柱体并排排列而成。
在本发明的又一个实施例中，导光板也可以采用如图14所示的结构。结合图4可以看出，相较于图4所示的导光板，该导光板仅仅在第一表面形成有柱状凸起，第二表面仍为平面结构。在该实施例中，导光口均设置在第二表面。这是因为第二表面为平面结构，而在平面结构上形成导光口更为容易(例如湿刻蚀等方式)。在第一表面的柱状凸起上形成导光口较为困难(通常需要采用激光刻蚀等工艺)，如果在第一表面的柱状凸起上形成导光口则会明显提高导光板的生产难度及成本。当然，在工艺及成本许可的情况下，导光口也可以设置在第一表面的柱状凸起上，本发明不限于此。相应地，用于生产该导管板的装置的辊压部所包含的第一辊压轮和第二辊压轮之中，将只有一个设置有凸起。
在本发明的再一个实施例中，导光板可以采用如图15所述的结构。结合图14可以看出，图15所示的导光板除相邻柱状凸起之间不存在间隔外，其他结构均与图14所示的导光板相同，在此不再赘述。
相较于现有背光模组的光源电路，本发明所提供的背光模组中的光源电路能够实现对发光单元的独立控制。这样，当根据液晶显示器的显示需要不必点亮全部发光单元时，控制电路能够将需要的发光单元点亮，同时将不需要的发光单元熄灭。由于发光单元不需要全部处于点亮状态，因此也就有效降低了背光模组的能耗，从而延长了用电装置的使用时长。
此外，本发明所提供的光源电路还能够实现光源亮度的可调。具体地，可控开关通过调节控制信号的占空比，可以实现对发光二极管点亮或熄灭的时长的调节。而在一段时间内，发光二极管点亮的时长越长，那么光源看上去也就越亮；反之，在一段时间内，发光 二极管点亮的时长越短，那么光源看上去也就越暗。这样也就实现了对光源亮度的调节。
由于本发明所提供的导光板的表面设置有相互平行的柱状凸起，而柱状凸起能够使得光线在导光板内传输时呈现相对收束的状态。因此，相较于现有的导光板，本发明所提供的导光板具有更好地束光效果。这也就使得导光板内光线的串扰得到大幅降低。
为了保证导光板表面的出光均匀性，本发明所提供的导光板中导光口的分布方式为导光口非均匀性分布。具体地，在各个设有导光口的柱状凸起中，距离柱状凸起的第一端(即靠近发光单元的一端)越远，该柱状凸起中相邻的两个导光口之间的间隔越短，即导光口的分布越密集。
靠近发光单元的各个导光口射出的光线较多，但靠近发光单元的位置处导光口分布较为稀疏；而远离反光单元的各个导光口射出的光线较少，但远离发光单元的位置处导光口分布较为密集。这样也就使得导光板各个区域射出的光线较为均衡，从而保证了导光板表面的出光均匀性。
应该理解的是，本发明所公开的实施例不限于这里所公开的特定结构、处理步骤或材料，而应当延伸到相关领域的普通技术人员所理解的这些特征的等同替代。还应当理解的是，在此使用的术语仅用于描述特定实施例的目的，而并不意味着限制。
说明书中提到的“一个实施例”或“实施例”意指结合实施例描述的特定特征、结构或特性包括在本发明的至少一个实施例中。因此，说明书通篇各个地方出现的短语“一个实施例”或“实施例”并不一定均指同一个实施例。
为了方便，在此使用的多个项目、结构单元、组成单元和/或材料可出现在共同列表中。然而，这些列表应解释为该列表中的每个元素分别识别为单独唯一的成员。因此，在没有反面说明的情况下，该列表中没有一个成员可仅基于它们出现在共同列表中便被解释为相同列表的任何其它成员的实际等同物。另外，在此还可以连同针对各元件的替代一起来参照本发明的各种实施例和示例。应当理解的是，这些实施例、示例和替代并不解释为彼此的等同物，而被认为是本发明的单独自主的代表。
此外，所描述的特征、结构或特性可以任何其他合适的方式结合到一个或多个实施例中。在上面的描述中，提供一些具体的细节，例如长度、宽度、形状等，以提供对本发明的实施例的全面理解。然而，相关领域的技术人员将明白，本发明无需上述一个或多个具体的细节便可实现，或者也可采用其它方法、组件、材料等实现。在其它示例中，周知的结构、材料或操作并未详细示出或描述以免模糊本发明的各个方面。
虽然上述示例用于说明本发明在一个或多个应用中的原理，但对于本领域的技术人员来说，在不背离本发明的原理和思想的情况下，明显可以在形式上、用法及实施的细节上作各种修改而不用付出创造性劳动。因此，本发明由所附的权利要求书来限定。

Claims (16)

  1. 一种导光板，其中，所述导光板包括相互平行的第一表面和第二表面，所述第一表面形成有相互平行的柱状凸起，所述第二表面形成有导光口。
  2. 如权利要求1所述的导光板，其中，所述第二表面也形成有相互平行的柱状凸起，所述导光口形成在第二表面的柱状凸起上。
  3. 如权利要求1所述的导光板，其中，相邻的柱状凸起之间间隔预设距离。
  4. 如权利要求2所述的导光板，其中，相邻的柱状凸起之间间隔预设距离。
  5. 如权利要求1所述的导光板，其中，所述导光口沿平行于柱状凸起的方向非均匀分布。
  6. 如权利要求5所述的导光板，其中，距离所述柱状凸起的第一端越远，同一柱状凸起上的相邻的两个导光口之间的间隔距离越短。
  7. 一种液晶面板背光模组，其中，所述背光模组包括光源电路和导光板，所述光源电路设置在导光板的侧面，所述导光板包括相互平行的第一表面和第二表面，所述第一表面形成有相互平行的柱状凸起，所述第二表面形成有导光口，所述导光板用于将从侧面射入的光线进行处理后由正面射出。
  8. 如权利要求7所述的液晶面板背光模组，其中，所述第二表面也形成有相互平行的柱状凸起，所述导光口形成在第二表面的柱状凸起上。
  9. 如权利要求7所述的液晶面板背光模组，其中，相邻的柱状凸起之间间隔预设距离。
  10. 如权利要求8所述的液晶面板背光模组，其中，相邻的柱状凸起之间间隔预设距离。
  11. 如权利要求7所述的液晶面板背光模组，其中，所述导光口沿平行于柱状凸起的方向非均匀分布。
  12. 如权利要求11所述的液晶面板背光模组，其中，距离所述柱状凸起的第一端越远，同一柱状凸起上的相邻的两个导光口之间的间隔距离越短。
  13. 一种制造导光板的装置，其中，所述装置包括：
    熔化炉，其用于将导光板原材料融化后输出；
    辊压部，其用于对来自熔化炉的导光板原材料进行辊压，形成包括相互平行的第一面和第二面的导光板，所述第一面形成有相互平行的柱状凸起；
    传送部，其用于将来自辊压部的导光板传送到生产线后端，所述传送部包括多个并排排列的弹性滚轮，以支撑和输送来自辊压部的导光板。
  14. 如权利要求13所述的装置，其中，所述辊压部包括彼此配合转动的第一辊压轮和第二辊压轮，在第一辊压轮和/或第二辊压轮上设置有凸起。
  15. 如权利要求14所述的装置，其中，所述第一辊压轮和/或第二辊压轮上的凸起为周向凸起。
  16. 如权利要求中13所述的装置，其中，所述装置还包括：
    覆膜部，其用于对来自传送部的导光板进行覆膜处理，以在导光板上形成保护膜。
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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107219585A (zh) * 2017-04-13 2017-09-29 芜湖德仓光电有限公司 一种导光板及使用该导光板的背光模组
CN108873155A (zh) * 2018-08-09 2018-11-23 嘉兴市创杰电子科技有限公司 一种导光板的生产方法及其结构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080309849A1 (en) * 2007-03-26 2008-12-18 Samsung Electronics Co., Ltd Light source unit, backlight assembly including the same, liquid crystal display device including the same, and method thereof
CN102338904A (zh) * 2010-07-16 2012-02-01 乐金显示有限公司 导光板以及包括该导光板的背光单元
CN203286373U (zh) * 2013-01-23 2013-11-13 中国科学技术大学 一种用于液晶显示装置的侧光型背光模组
CN103471037A (zh) * 2013-09-09 2013-12-25 深圳市华星光电技术有限公司 背光模组以及包括其的液晶显示装置
CN103487867A (zh) * 2012-06-13 2014-01-01 群康科技(深圳)有限公司 导光板及应用其的背光模块
JP2014063697A (ja) * 2012-09-24 2014-04-10 Dainippon Printing Co Ltd 面光源装置及び透過型表示装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2496052Y (zh) * 2001-04-13 2002-06-19 宋义 改进的均匀高效率侧发光背光源
US7478942B2 (en) * 2003-01-23 2009-01-20 Samsung Electronics Co., Ltd. Light guide plate with light reflection pattern
KR101343106B1 (ko) * 2006-12-04 2013-12-20 삼성디스플레이 주식회사 백라이트 어셈블리, 액정 표시 장치 및 도광판의 제조 방법
TW201124778A (en) * 2009-10-09 2011-07-16 Mitsubishi Rayon Co Image display device
CN102398338B (zh) * 2010-09-17 2014-02-26 奇美实业股份有限公司 具有高转写率的微结构光学板的制造方法
CN102043186A (zh) * 2010-10-21 2011-05-04 上海向隆电子科技有限公司 导光板及其制造方法
JP5584654B2 (ja) * 2011-06-03 2014-09-03 住友化学株式会社 保護フィルム付き導光板の製造方法
CN102873957A (zh) * 2011-07-14 2013-01-16 鸿富锦精密工业（深圳）有限公司 导光板保护膜贴附及撕除装置及方法
CN103162177B (zh) * 2011-12-16 2015-07-15 奇美实业股份有限公司 侧光式背光模组及导光板
TWI490565B (zh) * 2012-06-13 2015-07-01 群康科技(深圳)有限公司 導光板及應用其之背光模組
KR20140039357A (ko) * 2012-09-19 2014-04-02 삼성디스플레이 주식회사 백라이트 유닛 및 이를 포함하는 표시장치

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080309849A1 (en) * 2007-03-26 2008-12-18 Samsung Electronics Co., Ltd Light source unit, backlight assembly including the same, liquid crystal display device including the same, and method thereof
CN102338904A (zh) * 2010-07-16 2012-02-01 乐金显示有限公司 导光板以及包括该导光板的背光单元
CN103487867A (zh) * 2012-06-13 2014-01-01 群康科技(深圳)有限公司 导光板及应用其的背光模块
JP2014063697A (ja) * 2012-09-24 2014-04-10 Dainippon Printing Co Ltd 面光源装置及び透過型表示装置
CN203286373U (zh) * 2013-01-23 2013-11-13 中国科学技术大学 一种用于液晶显示装置的侧光型背光模组
CN103471037A (zh) * 2013-09-09 2013-12-25 深圳市华星光电技术有限公司 背光模组以及包括其的液晶显示装置

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