CN101433975A

CN101433975A - Method for processing light conducting plate head face

Info

Publication number: CN101433975A
Application number: CNA2007101698839A
Authority: CN
Inventors: 陈汉荣; 刘人瑞
Original assignee: YANGXIN PRECISION CO Ltd
Current assignee: YANGXIN PRECISION CO Ltd
Priority date: 2007-11-14
Filing date: 2007-11-14
Publication date: 2009-05-20

Abstract

The invention relates to a method for processing a light guide plate. The method comprises: a step of providing a light guide plate; a step of providing a scraper which is provided with a vibration device and uses the vibration device to generate vibration changes; and a step of attaching the scraper to the end face of the light guide plate to carry out fogging processing, wherein a plurality of stripes are formed on the end face and each stripe is corresponding to a vibration change.

Description

Method for processing light conducting plate head face

Technical field

The present invention relates to a kind of method for processing light conducting plate head face, and particularly relate to and a kind ofly make LGP end face atomizing and form the method for processing light conducting plate head face of preferable bright concealed wire quality.

Background technology

Because the liquid crystal itself in the panel of LCD is not had a characteristics of luminescence, the planar light source device so must arrange in pairs or groups, backlight module for example, its function are to panel of LCD supply briliancy fully and the area source that is evenly distributed to make panel of LCD reach Presentation Function.

The prior art backlight module is made of elements such as light source, reflecting plate, LGP, diffuser plate and layers of prisms, wherein LGP is the key element in the backlight module, its role is to incident light that light source is sent, after the scattering of LGP and reflection, and then convert area source to and offer panel of LCD and use.

The LGP of prior art comprise incidence surface, the exiting surface adjacent with this incidence surface and with this exiting surface opposed bottom surface.Wherein, the exiting surface of LGP or/and bottom surface are provided with equally distributed V-groove usually, and making in order to reflection and diffusion into the light emitted becomes area source; But the structure of this V-groove often makes light that light source sends after incidence surface enters LGP, at bright concealed wire near the many unequal intervals of formation on the exiting surface of incidence surface side, show the bad problem that has picture therefore to produce easily, especially use the backlight module of lamp tube type light source (for example cathode fluorescent tube), as shown in Figure 1.If use when for example light emitting diode (LED) is as light source, the exiting surface of LGP forms the phenomenon that light source shows uneven bright dark space sometimes, as shown in Figure 2.

Existing general solution to the problems described above, the most frequently used is exactly that incidence surface at LGP carries out end face processing, promptly allow the end face of incidence surface atomize, its implementation method is that the incidence surface use scraper of LGP is blowed mist, as shown in Figure 3, scraper 20 uses the polycrystalline diamond cuttves mostly, by along the incidence surface oscillation crosswise direction (arrow A direction in as figure) of LGP 10 toward the action of blowing mist of covering planing, adjust the bright concealed wire quality of acceptable picture.

Yet though the end face processing technology has been to produce the standard technology of LGP, this simple technology in fact is the very technology of difficulty, and the operator often needs the training through for many years.Existing end face processing mode, because being oscillation crosswise, cutter moves back and forth, the meeting nature forms the fine striped of oscillation crosswise, but in theory normal and process when good, can't form the striped of extensional vibration or special direction, LED source has slowly replaced traditional tubular light source (for example being cathode fluorescent tube) partly gradually in the recent period, because the spot light characteristic of light emitting diode, what need on the end face of LGP is the striped of extensional vibration, still can be shown as area source equably when the light that LED source is provided enters LGP, on the LGP of LED source, still require further improvement so traditional oscillation crosswise is blown the mist process application.

Summary of the invention

The invention provides a kind of method for processing light conducting plate head face that forms preferable bright concealed wire quality.

Other purpose of the present invention and advantage can be further understood from technical characterictic disclosed in this invention.

For reaching above-mentioned one or partly or all purposes or other purpose, embodiments of the invention propose a kind of method for processing light conducting plate head face, its step comprise as: LGP is provided; Scraper is provided, on scraper, disposes vibrating device, make scraper produce vibration and change by vibrating device; And the end face that makes scraper be close to LGP blows mist processing, wherein, will form many stripe at end face, and the corresponding vibration of the shape of each striped changes.

The vibration of two-dimensional space changes because of employing makes scraper carry out at least in the LGP end face is blown the process of mist simultaneously, the vibration that makes scraper carry out diversification has increased the control ability of LGP end face atomizing processing, as form the end face of different roughness or mist degree, or produce multidirectional trickle shake line, LGP of the bright concealed wire line of elimination that more can be processed to form like this according to the demand of reality.And, because multidirectional vibration can improve the cutting force of end face processing, thereby improve the working (machining) efficiency of end face processing, shorten man-hour.

For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and in conjunction with the accompanying drawings, be described in detail below.

Description of drawings

Fig. 1 produces the schematic diagram of bright concealed wire for a kind of exiting surface of prior art LGP;

Fig. 2 produces the schematic diagram of bright dark space for a kind of exiting surface of prior art LGP;

Fig. 3 is a kind of schematic diagram of prior art method for processing light conducting plate head face;

Fig. 4 is the embodiment schematic diagram of method for processing light conducting plate head face of the present invention, and it provides the vibration of oscillation crosswise, extensional vibration and three directions of forward vibration;

Fig. 5 is that the method for processing light conducting plate head face of one embodiment of the invention changes schematic diagram in the vibration of forward direction of vibration;

Fig. 6 is that the method for processing light conducting plate head face of one embodiment of the invention changes schematic diagram in the vibration of oscillation crosswise direction;

Fig. 7 is that the method for processing light conducting plate head face of one embodiment of the invention changes schematic diagram in the vibration of extensional vibration direction.

The specific embodiment

About aforementioned and other technology contents, characteristics and effect of the present invention, in detailed description, can clearly present below in conjunction with a preferred embodiment of accompanying drawing.The direction term of being mentioned in following examples, for example: upper and lower, left and right, front or rear etc. only are the directions with reference to annexed drawings.Therefore, the direction term of use is to be used for illustrating not to be to be used for limiting the present invention.

As shown in Figure 4, embodiments of the invention provide a kind of LGP end face to blow the mist processing method.Its step comprises:

Step S1: LGP 10 is provided;

Step S2: scraper 20 is provided, and configuration vibrating device 40 on the scraper makes scraper 20 produce vibration by vibrating device 40 on the end face 100 of LGP 10 and changes; And

Step S3: the end face 100 that scraper 20 is close to LGP 10 is blown mist processing, and wherein, scraper 20 will form many stripe on end face 100, and the corresponding vibration of the shape of each striped changes.

In step S1, the material of LGP 10 is a transparent material, as polymethyl methacrylate (Polymthyl Metharylate, PMMA) or Merlon (Polycarbonate, PC).

In step S2, the vibrating device 40 of configuration can be controlled the microvibration that scraper 20 produces different directions on the scraper 20, form more fine and smooth rill or stripeds that change, wherein, vibrating device 40 can be electric and magnetic oscillation element, piezoelectric element or ultrasonic oscillator etc.

In step S3, the scraper 20 that disposes vibrating device 40 produces three-dimensional vibration on the end face 100 of LGP 10 changes, and promptly comprises the vibration on oscillation crosswise, extensional vibration and three directions of forward vibration.Wherein, the direction of oscillation crosswise is the double vibrations of bearing of trend that is parallel to the end face 100 of LGP 10, shown in arrow C among the figure; The direction of extensional vibration is perpendicular to the double vibrations of bearing of trend of the end face 100 of LGP 10, shown in arrow D among the figure; And the direction of forward vibration is the double vibrations of normal direction that is parallel to the end face 100 of LGP 10, shown in arrow B among the figure, wherein, the described end face 100 of present embodiment instructs the incidence surface of tabula rasa 10, but, can also blow mist processing at other each end face of LGP according to demand not as limit.

Illustrate further, with reference to Fig. 5, when scraper 20 is gone up vibration at forward direction of vibration (shown in arrow B among the figure), because scraper 20 moves (shown in arrow A among the figure) with the bearing of trend of the end face 100 that is parallel to LGP 10 simultaneously, so the part of scraper 20 formed described striped on the end face 100 of LGP 10 is perpendicular to the end face 100 of LGP 10.In addition, with reference to Fig. 6, when scraper 20 (shown in arrow A among the figure) when the bearing of trend of the end face 100 of LGP 10 advances, when vibrating device 40 makes scraper 20 generation oscillation crosswise directions (shown in arrow C among the figure) go up vibration simultaneously, owing to the speed of scraper 20 is constantly done fluctuation and is changed and to produce reciprocating motion, the partial parallel of formed described striped is in the bearing of trend of the end face 100 of LGP 10, specifically, scraper 20 is understood the surface that forms irregular horizontal striped and produce the interval variation of roughness or mist degree on the end face 100 of LGP 10.In addition, with reference to Fig. 7, according to the Tool in Cutting theory, when scraper 20 along the bearing of trend of the end face 100 of LGP 10 advance (shown in arrow A among the figure), when vibrating device 40 makes scraper 20 generation extensional vibration directions (shown in arrow D among the figure) go up vibration simultaneously, make the part of scraper 20 formed described striped on the end face 100 of LGP 10 be the fluctuation shape.In general, above-mentioned vibrating device 40 can make scraper 20 produce the vibration of forward direction of vibration, oscillation crosswise direction and extensional vibration direction simultaneously, can make scraper 20 when the bearing of trend of the end face 100 of LGP 10 advances, produce irregular and do not have the disorderly striped and the rill of repeatability.

Owing to provide vibrating device 40 that scraper 20 is blown in the process of mist at the end face 100 of LGP 10, carrying out three-dimensional vibration simultaneously changes, make be processed to form scrape the fogmeter mask have irregular and do not have repeatability disorderly striped and rill, longitudinal furrow particularly, it is specially adapted to light emitting diode and the backlight module that LGP 10 cooperates, and makes to avoid producing the phenomenon that shows uneven bright dark space as conventional lighting sources.In addition, the vibration that scraper 20 carries out diversification has increased the control ability of end face atomizing processing, as form the end face of different roughness or mist degree, and or produce multidirectional trickle shake line, so can also be processed to form and can expect the LGP of the bright concealed wire quality accepted according to the demand of reality.And because the cutting force that the embodiment of the invention provides multidirectional vibration can improve the processing of LGP end face, thereby improve the working (machining) efficiency that end face is processed, shorten man-hour.

In addition, the method for processing light conducting plate head face of the embodiment of the invention also can be had a design of other numerous variations, for example not limit be which kind of mechanism or principle to vibrating device 40, as long as the effect of vibration is arranged, can use electric and magnetic oscillation element, piezoelectric element or ultrasonic oscillator, it all can cooperate the electronic system (not shown) to control its frequency of oscillation and amplitude thereof, generally can control ultrasonic oscillator to surpass the frequency vibration of 20KHZ, cooperate embodiment of the present invention can effectively carry out end face 100 processing of LGP 10, and can not constitute noise; Simultaneously, because the control rate of electronic system far above mechanical speed, so can manufacture different mist degrees at LGP 10 each end face according to demand, makes the mist degree bigger than centre etc. as the place, close two ends at end face, to improve the performance at the dark angle of light source; Simultaneously the direction of vibration of scraper 20 is not restricted to aforesaid oscillation crosswise, extensional vibration and forward vibration, its can be as required two or more than three direction on vibrate, to form the atomizing end face of best LGP 10.

Though the present invention with preferred embodiment openly as above; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the accompanying Claim person of defining.Arbitrary embodiment of the present invention in addition or claim must not reached whole purpose disclosed in this invention or advantage or characteristics.In addition, summary part and title only are the usefulness that is used for assisting the patent file search, are not to be used for limiting interest field of the present invention.

Claims

1, a kind of method for processing light conducting plate head face, its step comprises:

LGP is provided;

Scraper is provided, disposes vibrating device on described scraper, described scraper produces vibration by described vibrating device to be changed; And

The end face that described scraper is close to described LGP blows mist and adds man-hour, will form many stripe at this end face, and the corresponding described vibration of the shape of each described striped changes.

2, method for processing light conducting plate head face as claimed in claim 1, wherein said scraper produced described shake to change comprise oscillation crosswise, extensional vibration and forward and vibrate one of them or its combination.

3, method for processing light conducting plate head face as claimed in claim 2, the direction of wherein said oscillation crosswise is parallel to the bearing of trend of the described end face of described LGP, the direction of described extensional vibration is perpendicular to the described bearing of trend of the described end face of described LGP, and the direction of described forward vibration is parallel to the normal direction of the described end face of described LGP.

When 4, method for processing light conducting plate head face as claimed in claim 3, wherein said scraper were in the vibration of described forward, the part of formed described striped was perpendicular to the described end face of described LGP.

When 5, method for processing light conducting plate head face as claimed in claim 3, wherein said scraper were in described oscillation crosswise, the partial parallel of formed described striped was in the described bearing of trend of the described end face of described LGP.

When 6, method for processing light conducting plate head face as claimed in claim 3, wherein said scraper were in described extensional vibration, the part of formed described striped was the fluctuation shape.

7, method for processing light conducting plate head face as claimed in claim 1, wherein said vibrating device are electric and magnetic oscillation element, piezoelectric element or ultrasonic oscillator.

8, method for processing light conducting plate head face as claimed in claim 1, wherein said its frequency of oscillation of vibrating device electricity consumption subsystem controls and amplitude thereof.

9, method for processing light conducting plate head face as claimed in claim 1, wherein said end face are the incidence surface of described LGP.

10, method for processing light conducting plate head face as claimed in claim 1, the material of wherein said LGP are transparent material.

11, method for processing light conducting plate head face as claimed in claim 10, the material of wherein said LGP are polymethyl methacrylate or Merlon.