CN210514883U

CN210514883U - Novel backlight source

Info

Publication number: CN210514883U
Application number: CN201921678202.6U
Authority: CN
Inventors: 伯红权
Original assignee: Dongguan Yusheng Electronic Technology Co ltd
Current assignee: Dongguan Yusheng Electronic Technology Co ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-05-12
Anticipated expiration: 2029-10-09

Abstract

The utility model relates to a novel backlight source, including gluey chase, reflector plate, light guide plate and diaphragm in a poor light by supreme locating in proper order in the gluey chase down, the diaphragm in a poor light by supreme diffusion barrier, the membrane in a poor light include in proper order down the membrane in a poor light, go up the membrane in a poor light, the light guide plate be equipped with FPC winding displacement LED lamp, FPC winding displacement LED lamp include the FPC base plate, be equipped with positive circuit pad on the positive surface of FPC base plate, the positive surface covering of FPC base plate outside positive circuit pad has the pad face to cover the membrane, back surface covering has the non-welding disk face to cover at FPC base plate, positive circuit pad on paste the LED lamp that the light. The increase of the welding disk surface covering film can improve the problems of bright band, yellowing and the like of the backlight source lamp socket, simultaneously can reduce the color coordinate, increase the color temperature and change the backlight color, and the brightness can be improved by 1 percent under the condition of the same color coordinate.

Description

Novel backlight source

Technical Field

The utility model discloses electronic product backlight production technical field refers in particular to a novel backlight.

Background

With the development of mobile phone technology, the distance from the white light LED to the V.A visible area is closer and closer, and the problems of bright band and yellowing of the lamp socket cannot be effectively improved.

At present, a backlight source of a mobile phone generally adopts a plastic outer frame or a plastic and iron frame as an outer frame, a light shielding film is pasted on the outer frame, one side of the light shielding film is used for pasting and fixing an optical film material, the other side of the light shielding film is pasted with a liquid crystal display, a touch screen or a glass cover plate is pasted on the display screen, and the touch screen or the glass cover plate is pasted on the mobile phone shell. The problems that the conventional white light LED is close to a V.A visual area (namely, short optical path) and a backlight socket is easy to generate a bright band and yellow are not improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a novel backlight.

The utility model aims at prior art not enough, adopt to cover FPC pad face (subsides LED face) and debug into colours such as white to blue colour, white to red colour, white to purple, can improve backlight lamp bright band, the scheduling problem that yellows, can reduce the chromaticity coordinates simultaneously, the colour temperature uprises, changes the color of being shaded, under the same chromaticity coordinates circumstances, luminance can promote 1%.

In order to realize the purpose, a novel backlight source comprises a rubber frame, a reflector plate, a light guide plate and a backlight diaphragm, wherein the reflector plate, the light guide plate and the backlight diaphragm are sequentially arranged in the rubber frame from bottom to top, the backlight diaphragm sequentially comprises a diffusion film, a lower light-adding film and an upper light-adding film from bottom to top, the light guide plate is provided with a FPC (flexible printed circuit) flat-cable LED lamp, the FPC flat-cable LED lamp comprises a FPC substrate, a front circuit pad is arranged on the front surface of the FPC substrate, a pad surface covering film covers the front surface of the FPC substrate except the front circuit pad, a non-welding disc surface covering film covers the back surface of the FPC substrate, and the front circuit pad is pasted with a light source which is a white LED lamp.

Preferably, the pad surface cover film is formed by coating a white-blue ink coating on the cover film, wherein the white-blue ink coating is prepared from the following components in parts by mass: 100 parts of white ink and 0.1-100 parts of blue ink.

Preferably, the covering film for the pad surface is formed by covering a layer of white-to-red ink coating on the covering film, and the white-to-red ink coating is prepared from the following components in parts by mass: 100 parts of white ink and 0.1-100 parts of red ink.

Preferably, the covering film for the bonding pad surface is formed by covering a layer of white-violet ink coating on the covering film, and the white-violet ink coating is prepared from the following components in parts by mass: 100 parts of white ink and 0.1-100 parts of purple ink.

Preferably, the pad surface cover film is formed by coating a white bias color ink coating on the cover film.

A method for manufacturing a backlight source comprises the following steps:

the method comprises the following steps: performing corner wrapping treatment on the rubber iron frame;

step two: laminating the diffusion film, the lower brightness enhancement film and the upper brightness enhancement film together to form a backlight film;

step three: arranging a backlight film on the upper surface of the light guide plate;

step four: preparing a pad surface covering film: preparing a covering film, coating white bias colored ink on the surface of the covering film through a coating device, and curing the coated white bias colored ink through curing equipment, wherein the white bias colored ink consists of 100 parts of white ink and 0.1-100 parts of blue ink;

step five: preparing an FPC (flexible printed circuit) flat cable type LED lamp: brushing adhesive on the front surface of the FPC substrate and the back surface of the FPC substrate except the front circuit bonding pads, attaching the bonding pad surface covering film prepared in the fourth step to the front surface of the FPC substrate, attaching the LED lamp to the front circuit bonding pads, attaching the covering film to the back surface of the FPC substrate,

step six: fixing the FPC flat cable type LED lamp on the side surface of the light guide plate;

step seven: arranging the shading glue on the periphery of the upper surface of the backlight film;

step eight: and fixing the light guide plate and the reflecting sheet on the rubber frame through adhesive tapes in sequence.

The beneficial effects of the utility model reside in that: the utility model discloses increase the welding disk face and cover the membrane and can improve backlight lamp bright band, the scheduling problem that yellows, can reduce the chromaticity coordinates simultaneously, the colour temperature uprises, changes the color in a poor light, under the same chromaticity coordinates condition, luminance can promote 1%.

Drawings

Fig. 1 is an exploded view of the present invention.

Fig. 2 is a cut-away view of the present invention.

Fig. 3 is an enlarged view of a in fig. 2.

Fig. 4 is an enlarged view of fig. 3 at B.

Description of the labeling: 1. shading glue; 2. an upper brightness enhancement film; 3. a lower brightness enhancement film; 4. a diffusion membrane; 5. a light guide plate; 6, FPC flat cable type LED lamp; FPC base; 8. a non-welding disc surface covering film; 9. a membrane; 13. coating with ink; 10, an LED lamp; 11. a reflective sheet; 12. and (4) a rubber frame.

Detailed Description

See fig. 1-4, a novel backlight source, including gluing chase 12, reflector plate 11, light guide plate 5 and the diaphragm that is shaded locate in proper order in gluing chase 12 by supreme down, be equipped with shading glue 1 on gluing chase 12, the diaphragm that is shaded include diffusion barrier 4, membrane 3 that adds lustre to down in proper order, last membrane 2 that adds lustre to by supreme down, light guide plate 5 be equipped with FPC winding displacement LED lamp 6, winding displacement FPC LED lamp 6 includes FPC base plate 7, be equipped with positive circuit pad on FPC base plate 7, FPC base plate positive surface outside positive circuit pad covers is equipped with the pad face and covers membrane 9, positive circuit pad on paste have the light source to be white light LED lamp 10, be equipped with on the FPC base plate back and weld the membrane. The cover film on the non-welding disc surface is a common cover film, the cover film 9 on the welding disc surface is formed by covering a layer of ink coating on the cover film, the ink coating is formed by coating color inks such as white-to-blue ink, white-to-red ink, white-to-violet ink and the like on a membrane, the problems of bright bands, yellowing and the like of a backlight source lamp socket can be solved, meanwhile, the color coordinate can be reduced, the color temperature can be changed, the backlight color can be changed, and the brightness can be improved by 1% under the condition of the same.

Hue (hue), saturation (purity), and lightness available for a color. Any colored light seen by human eyes is the comprehensive effect of the three characteristics, namely three elements of color, wherein the hue has a direct relation with the wavelength of light waves, and the brightness and the saturation are related with the amplitude of the light waves. The color can be divided into colored and achromatic color, the achromatic color is white or black, colored is other colors except black and white, the cover film of the pad surface is to cover a layer of ink coating on the cover film, the ink coating forms the coating on the diaphragm through the ink mixed by any color of the chromatic color added in white, can all improve the problem such as the bright band of the backlight lamp, yellowing, etc., can reduce the color coordinate, color temperature is high, change the color of the backlight at the same time, wherein, the said white is bias to have colored ink to prepare from the following component of part by mass: the brightness of a pad surface covering film formed by 0.1 part of blue ink and 100 parts of white ink which are debugged can be improved by 1% under the condition of the same color coordinate, wherein the white ink is 100 parts and the any one colored ink is 0.1-100 parts.

A method for manufacturing a backlight source comprises the following steps:

The utility model discloses a novel color coordinate XY and the luminance contrast of backlight and current backlight are as follows the table and show:

the above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims

1. The utility model provides a novel backlight, includes gluey chase, reflector plate, light guide plate and diaphragm in a poor light locate in proper order gluey chase by supreme down in, the diaphragm in a poor light include diffusion barrier, membrane in a poor light down in proper order, go up the membrane in a poor light, the light guide plate be equipped with FPC winding displacement LED lamp, its characterized in that: the FPC flat cable type LED lamp comprises an FPC substrate, wherein a front circuit pad is arranged on the front surface of the FPC substrate, a pad surface covering film covers the front surface of the FPC substrate except the front circuit pad, a non-pad surface covering film covers the back surface of the FPC substrate, and a LED lamp with a white light source is pasted on the front circuit pad.

2. A novel backlight as claimed in claim 1, wherein: the pad surface covering film is a white-to-blue ink coating layer covered on the covering film.

3. A novel backlight as claimed in claim 1, wherein: the pad surface covering film is formed by covering a layer of white reddish ink coating on the covering film.

4. A novel backlight as claimed in claim 1, wherein: the covering film of the bonding pad surface is formed by covering a layer of white-violet ink coating on the covering film.

5. A novel backlight as claimed in claim 1, wherein: the covering film of the pad surface is formed by covering a layer of white-bias colored ink coating on the covering film.